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# Notes | EduRev

## Class 11 : Notes | EduRev

The document Notes | EduRev is a part of the Class 11 Course Physics 28 Years Past year papers for NEET/AIPMT Class 11.
All you need of Class 11 at this link: Class 11

Q.1. Taking into account of the significant figures, what is the value of 9.99 m-0.0099 m?    
A: 9.980 m
B: 9.9 m
C: 9.9801 m
D: 9.98 m

Ans: D As per rule
least no. of place in decimal portion of any number 9.98

Q.2. In an experiment, the percentage of error occurred in the measurement of physical quantities A, B, C and D are 1%, 2%, 3% and 4% respectively. Then the maximum percentage of error in the measurement X, where will be     
A: B: 16 %
C: -10 %
D: 10 %
Ans:
B
Given    = 2% + 1%+ 1%+ 12%= 16%

Q.3. A student measured the diameter of a small steel ball using a screw gauge of least count 0.001 cm. The main scale reading is 5 mm and zero of circular scale division coincides with 25 divisions above the reference level. If screw gauge has a zero error of – 0.004 cm, the correct diameter of the ball is :-    
A: 0.521 cm
B: 0.525 cm
C: 0.053 cm
D: 0.529 cm

Ans: D
Solution:
= MSR + VSR × LC + zero error
= 0.5 cm + 25 × 0.001 cm + 0.004 cm
= 0.529 cm

Q.4. A physical quantity of the dimensions of length that can be formed out of is velocity of light, G is universal constant of gravitation and e is charge] :-    

A: B: C: D: Ans: D
Solution: Q.5. If energy (E), velocity (V) and time (T) are chosen as the fundamental quantities, the dimensional formula of surface tension will be:    
A: [E-2 V-1 T-3]
B: [E V-2 T-1]
C: [E V-1 T-2]
D: [E V-2 T-2]
Ans:
D
Solution: Q.6. If force (F), velocity (V) and time(T) are taken as fundamental units, then the dimensions of mass are:    
A: [F V−1 T−1]
B: [F V−1 T]
C: [F V T−1]
D: [F V T−2]
Ans:
B
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