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# VITEEE Physics Test - 3

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## 35 Questions MCQ Test VITEEE: Subject Wise and Full Length MOCK Tests | VITEEE Physics Test - 3

VITEEE Physics Test - 3 for JEE 2023 is part of VITEEE: Subject Wise and Full Length MOCK Tests preparation. The VITEEE Physics Test - 3 questions and answers have been prepared according to the JEE exam syllabus.The VITEEE Physics Test - 3 MCQs are made for JEE 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for VITEEE Physics Test - 3 below.
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VITEEE Physics Test - 3 - Question 1

### The resistance of a coil for D.C. is in ohms. In A.C., the resistance

VITEEE Physics Test - 3 - Question 2

### An X - ray tube is operated at a constant potential difference and it is required to get X - ray of wavelength not less then 0. 2 nano-metres. Then the potential difference in kilo-volts is [ h = 6.63 x 10-34 J − sec ; e = 1.6 x 10-19 C ; c = 3x 108 m s-1 ]

VITEEE Physics Test - 3 - Question 3

### A photon of energy 2. 5eV and wavelength λ falls on a metal surface and the ejected electrons have a velocity 'V' . If the wave length λ of incident light is decreased by 20%, the velocity of emitted electrons is doubled, then the work function of the metal is

VITEEE Physics Test - 3 - Question 4

Current flows in the semi-conductors through

VITEEE Physics Test - 3 - Question 5

A 2μ F capacitor is charged to 100 volt and then its plates are connected by a conducting wire. The heat produced is

VITEEE Physics Test - 3 - Question 6

A 4 V battery of internal resistance 1 Ω sends a current through a 3 Ω resistor. The terminal potential difference is

VITEEE Physics Test - 3 - Question 7

The maximum current that flows through a fuse wire before it blows out varies with its radius r as

VITEEE Physics Test - 3 - Question 8

Which of the following is a non-ohmic resistor?

VITEEE Physics Test - 3 - Question 9

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

VITEEE Physics Test - 3 - Question 10

When a proton is accelerated with 1 volt potential difference, then its kinetic energy is

VITEEE Physics Test - 3 - Question 11

What is increased in a step-down transformer

VITEEE Physics Test - 3 - Question 12

A conductor rod of length L rotates with angular speed ω in a uniform magnetic field of induction B which is perpendicular to its motion. The induced e.m.f developed between the two ends of the rod is

VITEEE Physics Test - 3 - Question 13

The induced e.m.f. produced in the primary and secondary coils is 2 mV and 5 mV respectively. If the rate of change of current is 20 A-s-1, then coefficient of mutual induction of the secondary coil is

VITEEE Physics Test - 3 - Question 14

Which of the following rays are not electromagnetic wave?

VITEEE Physics Test - 3 - Question 15

A sphere S1 of radius r1 encloses a total charge Q. If there is another concentric sphere S1 of radius r2 > r1 and there be no additional charges between S1 and S2, the ratio of electric flux through S1 and S2 is

VITEEE Physics Test - 3 - Question 16

An electron of charge e coulomb passes through a potential difference of V volt. Its energy in joule will be

VITEEE Physics Test - 3 - Question 17

An electric dipole consists of two opposite charges of magnitude  +- q seperated by 2a. When the dipole is placed in uniform electric field E, to have minimum potential energy, then dipole moment p makes which the following angle with E

VITEEE Physics Test - 3 - Question 18

The capacitance of a parallel plate capacitor is 10 μF when distance between its plates is 8 cm. If distance between the plates is reduced to 4 cm, its capacitance will be

VITEEE Physics Test - 3 - Question 19

A cyclotron can not accelerate

VITEEE Physics Test - 3 - Question 20

The difference between the mass of a nucleus and the total mass of the constituents is its

VITEEE Physics Test - 3 - Question 21

A body of mass 1g and carrying a charge 10-8 C passes from two points P and Q. P and Q are at electric potentials 600V and 0V respectively. The velocity of the body at Q is 20 cm s-1 . Its velocity in ms-1 at P is

VITEEE Physics Test - 3 - Question 22

A heavy nucleus at rest breaks into two fragments which fly off with velocities 8:1. The ratio of radii of the fragments is

VITEEE Physics Test - 3 - Question 23
Which of the following cannot be emitted by radioactive substances during their decay?
VITEEE Physics Test - 3 - Question 24

Stopping potential for photoelectrons

VITEEE Physics Test - 3 - Question 25

When the photons of energy hv fall on a photo-sensitive surface (work function hv₀) electrons are emitted from the metallic surface. This is known as photoelectric effect. The electron coming out of the surface have a kinetic energy. Then it is possible to state that

VITEEE Physics Test - 3 - Question 26

The magnifying power of a simple microscope M is given by

VITEEE Physics Test - 3 - Question 27

A prism is made up of material of refractive index √ 3 . The angle of the prism is A. If the angle of minimum deviation is equal to the angle of the prism, then the value of A is

Detailed Solution for VITEEE Physics Test - 3 - Question 27

VITEEE Physics Test - 3 - Question 28

The region near the junction of p - n diode where there are no charge carriers is called

VITEEE Physics Test - 3 - Question 29

In a properly biased transistor

VITEEE Physics Test - 3 - Question 30

In P-type semiconductor, there is

VITEEE Physics Test - 3 - Question 31

Three semi-conductors are arranged in the increasing order of their energy gap as follows. The correct arrangement is

VITEEE Physics Test - 3 - Question 32
The electrical resistance of the following decreases with rise in temperature
VITEEE Physics Test - 3 - Question 33

When distance between source of light and observer decreases, then the apparent frequency of light

VITEEE Physics Test - 3 - Question 34

Laser light is considered to be coherent as it consists of

VITEEE Physics Test - 3 - Question 35

When two coherent monochromatic light beams of intensities I and 4I are superimposed, the ratio between maximum and minimum intensities in the resultant beam is

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