Sample Question Paper 5 - Physics, Class 12 NEET Notes | EduRev

Physics Class 12

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NEET : Sample Question Paper 5 - Physics, Class 12 NEET Notes | EduRev

 Page 1


  
 
CBSE XII  |  PHYSICS 
Sample Paper – 5 
 
     
CBSE 
Class XII Physics 
Sample Paper - 5 
 
Time:  3 Hours Maximum Marks: 70 
 
General Instructions: 
1. All questions are compulsory. There are 27 questions in all.  
2. This question paper has four sections: Section A, Section B, Section C and Section D.  
3. Section A contains five questions of one mark each, Section B contains seven questions of 
two marks each, Section C contains twelve questions of three marks each, and Section D 
contains three questions of five marks each.  
4. There is no overall choice. However, internal choice has been provided in two questions 
of one mark, two questions of two marks, four questions of three marks and three 
questions of five marks weightage. You have to attempt only one of the choices in such 
questions.  
5. You may use the following values of physical constants wherever necessary: 
              
8
34
19
71
12 2 1 2
0
9 2 2
0
31
 
27
  3  10 /
   6.63  10  
  1.6  10  
  4  10    
  8.854  10      
1
 9  10    
4
 9.1 10  
    1.675  10  
  
o
e
c m s
h Js
eC
µ T m A
C N m
N m C
m kg
mass of neutron kg
mass of prot
?
?
??
?
?
??
? ? ?
?
?
?
??
??
??
??
??
??
??
??
27
23
23 1 
  1.673  10 
’   6.023  10   
   1.38  10 
on kg
Avogadro s number per gram mole
Boltzmann constant JK
?
??
??
??
??
 
      
Section A 
 
1. A uniform electric field E exists between two charged plates as shown in the figure. 
What would be the work done in moving a charge q along the closed rectangular path 
ABCDA?                (1) 
Page 2


  
 
CBSE XII  |  PHYSICS 
Sample Paper – 5 
 
     
CBSE 
Class XII Physics 
Sample Paper - 5 
 
Time:  3 Hours Maximum Marks: 70 
 
General Instructions: 
1. All questions are compulsory. There are 27 questions in all.  
2. This question paper has four sections: Section A, Section B, Section C and Section D.  
3. Section A contains five questions of one mark each, Section B contains seven questions of 
two marks each, Section C contains twelve questions of three marks each, and Section D 
contains three questions of five marks each.  
4. There is no overall choice. However, internal choice has been provided in two questions 
of one mark, two questions of two marks, four questions of three marks and three 
questions of five marks weightage. You have to attempt only one of the choices in such 
questions.  
5. You may use the following values of physical constants wherever necessary: 
              
8
34
19
71
12 2 1 2
0
9 2 2
0
31
 
27
  3  10 /
   6.63  10  
  1.6  10  
  4  10    
  8.854  10      
1
 9  10    
4
 9.1 10  
    1.675  10  
  
o
e
c m s
h Js
eC
µ T m A
C N m
N m C
m kg
mass of neutron kg
mass of prot
?
?
??
?
?
??
? ? ?
?
?
?
??
??
??
??
??
??
??
??
27
23
23 1 
  1.673  10 
’   6.023  10   
   1.38  10 
on kg
Avogadro s number per gram mole
Boltzmann constant JK
?
??
??
??
??
 
      
Section A 
 
1. A uniform electric field E exists between two charged plates as shown in the figure. 
What would be the work done in moving a charge q along the closed rectangular path 
ABCDA?                (1) 
  
 
CBSE XII  |  PHYSICS 
Sample Paper – 5 
 
     
 
 
2. How does the (i) pole strength and (ii) magnetic moment of each part of a bar magnet 
change if it is cut into two equal pieces transverse to its length?   (1) 
                                                                      
                                                                          OR 
 
The figure given below shows two positions of a loop PQR in a perpendicular uniform 
magnetic field. In which position of the coil is there an induced emf?         (1) 
 
 
 
3. Why are microwaves used in RADAR?  (1) 
 
                                                                  OR 
Arrange these in the decreasing order of frequency: microwaves, infra red waves, x-
rays, visible rays  (1)  
 
 
 
4. The image of a candle is formed by a convex lens on a screen. The lower half of the lens 
is painted black to make it completely opaque. Draw the ray diagram to show the image 
formation. How will this image be different from the one obtained when the lens is not 
painted black?  (1) 
 
 
 
Page 3


  
 
CBSE XII  |  PHYSICS 
Sample Paper – 5 
 
     
CBSE 
Class XII Physics 
Sample Paper - 5 
 
Time:  3 Hours Maximum Marks: 70 
 
General Instructions: 
1. All questions are compulsory. There are 27 questions in all.  
2. This question paper has four sections: Section A, Section B, Section C and Section D.  
3. Section A contains five questions of one mark each, Section B contains seven questions of 
two marks each, Section C contains twelve questions of three marks each, and Section D 
contains three questions of five marks each.  
4. There is no overall choice. However, internal choice has been provided in two questions 
of one mark, two questions of two marks, four questions of three marks and three 
questions of five marks weightage. You have to attempt only one of the choices in such 
questions.  
5. You may use the following values of physical constants wherever necessary: 
              
8
34
19
71
12 2 1 2
0
9 2 2
0
31
 
27
  3  10 /
   6.63  10  
  1.6  10  
  4  10    
  8.854  10      
1
 9  10    
4
 9.1 10  
    1.675  10  
  
o
e
c m s
h Js
eC
µ T m A
C N m
N m C
m kg
mass of neutron kg
mass of prot
?
?
??
?
?
??
? ? ?
?
?
?
??
??
??
??
??
??
??
??
27
23
23 1 
  1.673  10 
’   6.023  10   
   1.38  10 
on kg
Avogadro s number per gram mole
Boltzmann constant JK
?
??
??
??
??
 
      
Section A 
 
1. A uniform electric field E exists between two charged plates as shown in the figure. 
What would be the work done in moving a charge q along the closed rectangular path 
ABCDA?                (1) 
  
 
CBSE XII  |  PHYSICS 
Sample Paper – 5 
 
     
 
 
2. How does the (i) pole strength and (ii) magnetic moment of each part of a bar magnet 
change if it is cut into two equal pieces transverse to its length?   (1) 
                                                                      
                                                                          OR 
 
The figure given below shows two positions of a loop PQR in a perpendicular uniform 
magnetic field. In which position of the coil is there an induced emf?         (1) 
 
 
 
3. Why are microwaves used in RADAR?  (1) 
 
                                                                  OR 
Arrange these in the decreasing order of frequency: microwaves, infra red waves, x-
rays, visible rays  (1)  
 
 
 
4. The image of a candle is formed by a convex lens on a screen. The lower half of the lens 
is painted black to make it completely opaque. Draw the ray diagram to show the image 
formation. How will this image be different from the one obtained when the lens is not 
painted black?  (1) 
 
 
 
  
 
CBSE XII  |  PHYSICS 
Sample Paper – 5 
 
     
5. In an experiment on the photoelectric effect, the following graphs were obtained 
between the photoelectric current (I) and the anode potential (V). Name the 
characteristic of the incident radiation which was kept constant in this experiment. 
         (1) 
 
 
                                                                       
                                                                     Section B 
 
6. Four point charges are placed at four corners of a square in the two ways (i) and (ii) 
shown below. Will the (a) electric field and (b) electric potential at the centre of the 
square be the same or different in the two configurations and why?         (2) 
 
 
 
OR 
 
Two identical metallic surfaces A and B are kept parallel to each other in air, separated 
by a distance of 1.0 cm as shown in the figure. 
 
 
Page 4


  
 
CBSE XII  |  PHYSICS 
Sample Paper – 5 
 
     
CBSE 
Class XII Physics 
Sample Paper - 5 
 
Time:  3 Hours Maximum Marks: 70 
 
General Instructions: 
1. All questions are compulsory. There are 27 questions in all.  
2. This question paper has four sections: Section A, Section B, Section C and Section D.  
3. Section A contains five questions of one mark each, Section B contains seven questions of 
two marks each, Section C contains twelve questions of three marks each, and Section D 
contains three questions of five marks each.  
4. There is no overall choice. However, internal choice has been provided in two questions 
of one mark, two questions of two marks, four questions of three marks and three 
questions of five marks weightage. You have to attempt only one of the choices in such 
questions.  
5. You may use the following values of physical constants wherever necessary: 
              
8
34
19
71
12 2 1 2
0
9 2 2
0
31
 
27
  3  10 /
   6.63  10  
  1.6  10  
  4  10    
  8.854  10      
1
 9  10    
4
 9.1 10  
    1.675  10  
  
o
e
c m s
h Js
eC
µ T m A
C N m
N m C
m kg
mass of neutron kg
mass of prot
?
?
??
?
?
??
? ? ?
?
?
?
??
??
??
??
??
??
??
??
27
23
23 1 
  1.673  10 
’   6.023  10   
   1.38  10 
on kg
Avogadro s number per gram mole
Boltzmann constant JK
?
??
??
??
??
 
      
Section A 
 
1. A uniform electric field E exists between two charged plates as shown in the figure. 
What would be the work done in moving a charge q along the closed rectangular path 
ABCDA?                (1) 
  
 
CBSE XII  |  PHYSICS 
Sample Paper – 5 
 
     
 
 
2. How does the (i) pole strength and (ii) magnetic moment of each part of a bar magnet 
change if it is cut into two equal pieces transverse to its length?   (1) 
                                                                      
                                                                          OR 
 
The figure given below shows two positions of a loop PQR in a perpendicular uniform 
magnetic field. In which position of the coil is there an induced emf?         (1) 
 
 
 
3. Why are microwaves used in RADAR?  (1) 
 
                                                                  OR 
Arrange these in the decreasing order of frequency: microwaves, infra red waves, x-
rays, visible rays  (1)  
 
 
 
4. The image of a candle is formed by a convex lens on a screen. The lower half of the lens 
is painted black to make it completely opaque. Draw the ray diagram to show the image 
formation. How will this image be different from the one obtained when the lens is not 
painted black?  (1) 
 
 
 
  
 
CBSE XII  |  PHYSICS 
Sample Paper – 5 
 
     
5. In an experiment on the photoelectric effect, the following graphs were obtained 
between the photoelectric current (I) and the anode potential (V). Name the 
characteristic of the incident radiation which was kept constant in this experiment. 
         (1) 
 
 
                                                                       
                                                                     Section B 
 
6. Four point charges are placed at four corners of a square in the two ways (i) and (ii) 
shown below. Will the (a) electric field and (b) electric potential at the centre of the 
square be the same or different in the two configurations and why?         (2) 
 
 
 
OR 
 
Two identical metallic surfaces A and B are kept parallel to each other in air, separated 
by a distance of 1.0 cm as shown in the figure. 
 
 
  
 
CBSE XII  |  PHYSICS 
Sample Paper – 5 
 
     
 
 
Surface A is given a positive potential of 10 V and the other surface B is earthed. 
(i) What is the magnitude and direction of the uniform electric field between points y 
and z? 
(ii) What is the work done in moving a charge of 20 C ? from point x to point y?  (2) 
 
 
 
7. The I –V characteristics of a resistor are observed to deviate from the straight line for 
higher values of current as shown below. Why is this so?          (2) 
 
 
 
 
8.  
 
In the circuit shown below, R represents a resistance. If the frequency ? of the supply is 
doubled, how should the value of C and L be changed so that the glow in the bulb 
remains unchanged? 
 
 
OR 
 
A coil L with air as the core and a bulb B are connected in series to the AC mains as 
shown in the given figure. 
Page 5


  
 
CBSE XII  |  PHYSICS 
Sample Paper – 5 
 
     
CBSE 
Class XII Physics 
Sample Paper - 5 
 
Time:  3 Hours Maximum Marks: 70 
 
General Instructions: 
1. All questions are compulsory. There are 27 questions in all.  
2. This question paper has four sections: Section A, Section B, Section C and Section D.  
3. Section A contains five questions of one mark each, Section B contains seven questions of 
two marks each, Section C contains twelve questions of three marks each, and Section D 
contains three questions of five marks each.  
4. There is no overall choice. However, internal choice has been provided in two questions 
of one mark, two questions of two marks, four questions of three marks and three 
questions of five marks weightage. You have to attempt only one of the choices in such 
questions.  
5. You may use the following values of physical constants wherever necessary: 
              
8
34
19
71
12 2 1 2
0
9 2 2
0
31
 
27
  3  10 /
   6.63  10  
  1.6  10  
  4  10    
  8.854  10      
1
 9  10    
4
 9.1 10  
    1.675  10  
  
o
e
c m s
h Js
eC
µ T m A
C N m
N m C
m kg
mass of neutron kg
mass of prot
?
?
??
?
?
??
? ? ?
?
?
?
??
??
??
??
??
??
??
??
27
23
23 1 
  1.673  10 
’   6.023  10   
   1.38  10 
on kg
Avogadro s number per gram mole
Boltzmann constant JK
?
??
??
??
??
 
      
Section A 
 
1. A uniform electric field E exists between two charged plates as shown in the figure. 
What would be the work done in moving a charge q along the closed rectangular path 
ABCDA?                (1) 
  
 
CBSE XII  |  PHYSICS 
Sample Paper – 5 
 
     
 
 
2. How does the (i) pole strength and (ii) magnetic moment of each part of a bar magnet 
change if it is cut into two equal pieces transverse to its length?   (1) 
                                                                      
                                                                          OR 
 
The figure given below shows two positions of a loop PQR in a perpendicular uniform 
magnetic field. In which position of the coil is there an induced emf?         (1) 
 
 
 
3. Why are microwaves used in RADAR?  (1) 
 
                                                                  OR 
Arrange these in the decreasing order of frequency: microwaves, infra red waves, x-
rays, visible rays  (1)  
 
 
 
4. The image of a candle is formed by a convex lens on a screen. The lower half of the lens 
is painted black to make it completely opaque. Draw the ray diagram to show the image 
formation. How will this image be different from the one obtained when the lens is not 
painted black?  (1) 
 
 
 
  
 
CBSE XII  |  PHYSICS 
Sample Paper – 5 
 
     
5. In an experiment on the photoelectric effect, the following graphs were obtained 
between the photoelectric current (I) and the anode potential (V). Name the 
characteristic of the incident radiation which was kept constant in this experiment. 
         (1) 
 
 
                                                                       
                                                                     Section B 
 
6. Four point charges are placed at four corners of a square in the two ways (i) and (ii) 
shown below. Will the (a) electric field and (b) electric potential at the centre of the 
square be the same or different in the two configurations and why?         (2) 
 
 
 
OR 
 
Two identical metallic surfaces A and B are kept parallel to each other in air, separated 
by a distance of 1.0 cm as shown in the figure. 
 
 
  
 
CBSE XII  |  PHYSICS 
Sample Paper – 5 
 
     
 
 
Surface A is given a positive potential of 10 V and the other surface B is earthed. 
(i) What is the magnitude and direction of the uniform electric field between points y 
and z? 
(ii) What is the work done in moving a charge of 20 C ? from point x to point y?  (2) 
 
 
 
7. The I –V characteristics of a resistor are observed to deviate from the straight line for 
higher values of current as shown below. Why is this so?          (2) 
 
 
 
 
8.  
 
In the circuit shown below, R represents a resistance. If the frequency ? of the supply is 
doubled, how should the value of C and L be changed so that the glow in the bulb 
remains unchanged? 
 
 
OR 
 
A coil L with air as the core and a bulb B are connected in series to the AC mains as 
shown in the given figure. 
  
 
CBSE XII  |  PHYSICS 
Sample Paper – 5 
 
     
                                           
 
The bulb glows with some brightness. How would the glow of the bulb change if an iron 
rod was inserted in the coil? Give reason in support of your answer.  (2) 
 
9. Experimental observations have shown that X-rays 
(i) travel in vacuum with a speed of 
8
3 10 / . ms ? 
(j) exhibit the phenomenon of diffraction and can be polarised 
What conclusions can be drawn about the nature of X-rays from each of these 
observations? (2) 
 
 
 
 
10.   Why is a semiconductor damaged by a strong current?  (2) 
  
 
11.  A message signal of frequency 10 kHz is used to modulate a carrier of frequency 1 MHz. 
Find the side bands produced.  (2) 
 
12. Write the relation between the angle of incidence (i ), the angle of emergence (e ), the 
angle of prism (A ) and the angle of deviation ( ? ) for rays undergoing refraction 
through a prism. What is the relation between refractive index of the material of a 
prism in terms of A and ?.  (2) 
 
 
    Section C  
 
13.  When two known resistances, R andS , are connected in the left and right gaps of a 
meter bridge, the balance point is found at a distance ‘l ’ from the zero end of the meter 
bridge wire. An unknown resistance X is connected in parallel to the resistances, and 
the balance point is now found at a distance 
2
l from the zero end of the meter bridge 
wire. Obtain a formula of X in terms of 
12
, and . l l S     
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