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VITEEE Physics Test - 5


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35 Questions MCQ Test VITEEE: Subject Wise and Full Length MOCK Tests | VITEEE Physics Test - 5

VITEEE Physics Test - 5 for JEE 2023 is part of VITEEE: Subject Wise and Full Length MOCK Tests preparation. The VITEEE Physics Test - 5 questions and answers have been prepared according to the JEE exam syllabus.The VITEEE Physics Test - 5 MCQs are made for JEE 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for VITEEE Physics Test - 5 below.
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VITEEE Physics Test - 5 - Question 1

In photoelectric phenomenon, the number of photo electrons emitted depends on

Detailed Solution for VITEEE Physics Test - 5 - Question 1

Photoelectric current depends on the intensity of incident light,
the number of photoelectrons emitted per second is directly proportional to the intensity of incident radiation.

VITEEE Physics Test - 5 - Question 2

A particle of mass 0. 6 gm and having charge of 25 nC is moving horizontally with a uniform velocity 1.2 x 104  ms-1 in a uniform magnetic field, then the value of the magnetic induction is (g = 10 m s-2 )

VITEEE Physics Test - 5 - Question 3

For electroplating a spoon, it is placed in the voltameter at

VITEEE Physics Test - 5 - Question 4

Consider telecommunication through optical fibres. Which of the following statements is not correct

VITEEE Physics Test - 5 - Question 5

The average power dissipated in a pure inductor of inductance L when an A.C. current is passing through it is

VITEEE Physics Test - 5 - Question 6

If an electron revolves in the path of a circle of radius of 0.5x 10-10  m at a frequency of 5 x 1015  cycles ∕ sec , the electric current in the circle is (charge of electron = 1.6 x 10-19  C )

VITEEE Physics Test - 5 - Question 7

The length of given cylindrical wire is increased by 100%. Due to the consequent decrease in diameter the change in the resistance of the wire will be

VITEEE Physics Test - 5 - Question 8

A wire of radius r has resistance R. If it is stretched to a radius of 3r/4, its resistance becomes

Detailed Solution for VITEEE Physics Test - 5 - Question 8

Let L1 be the length and A1 the area of crosssection of the original wire and L2, A2 be their values of the stretched wire
Since volume of the wire remains unchanged, we have

VITEEE Physics Test - 5 - Question 9

At what temperature, the resistance of a copper wire will become three times its value at 0oC ? (Temperature coefficient of resistance for copper = 4 x 10-3per oC)

VITEEE Physics Test - 5 - Question 10

If particles are moving with same velocity, then maximum de-Broglie's wavelength will be for

VITEEE Physics Test - 5 - Question 11

The core of a transformer is laminated so that

VITEEE Physics Test - 5 - Question 12

A solenoid of length 20 cm area of cross-section 4 cm2 and having 4000 turns is placed inside another solenoid of 2000 turns having a cross-section area 8 cm2 and length 10 cm. The mutual inductance of the system is

VITEEE Physics Test - 5 - Question 13

Which of the following waves have maximum wavelength?

VITEEE Physics Test - 5 - Question 14

Two coils are placed close to eachother. The mutual inductance of the pair of coils depends upon

VITEEE Physics Test - 5 - Question 15

Eight dipoles of charges of magnitude e are placed inside a cube. The total electric flux coming out of the cube will be

VITEEE Physics Test - 5 - Question 16

Two charges -10 C and + 10 C are placed 10cm apart. Potential at the centre of the line joining two charges is

VITEEE Physics Test - 5 - Question 17

Two equal charges, q each are placed at a distance of 2a, and a third charge -2q is placed at the mid point. The potential energy of the system is

VITEEE Physics Test - 5 - Question 18

If an uncharged capacitor is charged by connecting it to a battery, then the amount of energy lost as heat is

VITEEE Physics Test - 5 - Question 19
An electric dipole placed in a non-uniform electric field experiences
VITEEE Physics Test - 5 - Question 20

Two equal charges q each are placed at a distance of 2a. If a third charge-2q is placed at the mid-point, then potential energy of the system is

Detailed Solution for VITEEE Physics Test - 5 - Question 20

VITEEE Physics Test - 5 - Question 21

In β + decay process, the following changes take place inside the nucleus

VITEEE Physics Test - 5 - Question 22

A current carrying loop is free to return in a uniform magnetic field. The loop will then come into equilibrium when its plane is inclined at

VITEEE Physics Test - 5 - Question 23

Which of the following is more effective in inducing nuclear fission

VITEEE Physics Test - 5 - Question 24

What is the Q-value of the reaction
p + 7 Li → 4 He + 4 He
The atomic masses of 1 H , 4 H e and 7 L i are 1.007825 u, 4.002603 u and 7.016004 u respectively

VITEEE Physics Test - 5 - Question 25
If work function of metal is 3 eV then threshold wavelength will be
VITEEE Physics Test - 5 - Question 26

The refractive index of a certain glass is 1.5, for a light of wavelength 6000 Å . When light (c = 3 x 108 m s-1)passed through this glass, its wavelength is

VITEEE Physics Test - 5 - Question 27
The spectrum obtained from a sodium vapour lamp is an example for
VITEEE Physics Test - 5 - Question 28

The minimum potential difference between the base and emitter required to switch a silicon transistor 'ON' is approximately

VITEEE Physics Test - 5 - Question 29

The intrinsic semiconductor becomes an insulator at

VITEEE Physics Test - 5 - Question 30
In a PN-junction
VITEEE Physics Test - 5 - Question 31

The potential barrier, in the depletion of layer, is due to

VITEEE Physics Test - 5 - Question 32

Doppler's effects in sound and light are

VITEEE Physics Test - 5 - Question 33

When a source of light is receding away from an observer, then the spectral lines will get displaced towards

VITEEE Physics Test - 5 - Question 34

Which of the following property of light waves is not observed in sound waves?

VITEEE Physics Test - 5 - Question 35

In young's double slit experiment, three light, blue, yellow and red are used successively. For which colour, will the fringe width be maximum?

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