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# JIPMER Physics Mock Test - 6

## 60 Questions MCQ Test JIPMER 2020: Subject wise and Full Length Mock Tests | JIPMER Physics Mock Test - 6

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This mock test of JIPMER Physics Mock Test - 6 for NEET helps you for every NEET entrance exam. This contains 60 Multiple Choice Questions for NEET JIPMER Physics Mock Test - 6 (mcq) to study with solutions a complete question bank. The solved questions answers in this JIPMER Physics Mock Test - 6 quiz give you a good mix of easy questions and tough questions. NEET students definitely take this JIPMER Physics Mock Test - 6 exercise for a better result in the exam. You can find other JIPMER Physics Mock Test - 6 extra questions, long questions & short questions for NEET on EduRev as well by searching above.
QUESTION: 1

Solution:
QUESTION: 2

### The north pole of a long horizontal bar magnet is being brought closer to a vertical conducting plane, along the perpendicular direction. The induced current in the conducting plane is

Solution:

As per Lenz's law, induced current must be anticlockwise, so as to develop north polarity to oppose the incoming north pole.

QUESTION: 3

### The specific resistance of a wire of length 1 m and area of cross-section 0.5 mm2 is 25 μΩ-cm. The resistance of the wire will be

Solution:
QUESTION: 4

The resistance of a 10 m long wire is 10 Ω. Its length is increased by 25% by stretching the wire uniformly. The resistance of wire will change to (approximately)

Solution:
QUESTION: 5

An air capacitor of capacity C = 10μF is connected to a constant voltage battery of 12 volt. Now the space between the plates is filled with a liquid of dielectric constant 5. The charge that flows now from battery to the capacitor is

Solution:

C = 10 μF
Charge in capacitor q = CV
= 10 x 12
= 120 μC
On keeping liquid of dielectric constant5, capacity will becomes of 5 time.
∴ Charge q = 5 x 120
= 600 μC

QUESTION: 6

When radiation of wavelength λ is incident on a metallic surface, the stopping potential is 4.8 volts. If the same surface is illuminated with radiation of double the wavelength, then the stopping potential becomes 1.6 volts. Then the threshold wavelength for the surface is

Solution:

From Einsteins photoelectric equation:
eV0 = hv - hv0   QUESTION: 7

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

Solution:
QUESTION: 8

The curve drawn between velocity and frequency of a photon in vaccum will be

Solution:

Velocity of light is same for photons of all frequency

QUESTION: 9

Two inductors each of inductance 2 L are joined in parallel. What is their equivalent inductance?

Solution:
QUESTION: 10

A smooth hemispherical bowl of radius a, whose lowest-point is A, is fixed with its rim uppermost and horizontal. A particle of mass m is projected along the inner surface of the bowl with a speed of 2 √ga from A, so that its motion is in the vertical plane through A. Then the reaction between the particle and the bowl when the particle is at a vertical height 2a/3 above A, is

Solution:

The equations of motion are R − mg cos θ = m v2/a … 1  substituting the value of v2 in (1)� we get
R = mg cos θ + m v2 /a
= mg cos θ + m/a [4ag − 2ag + 2ag cos θ]
= mg (2 + 3 cos θ) QUESTION: 11

If 'Q' is the quantity of charge, 'V' the potential and 'C' the capacity of a conductor, they are related as

Solution:
QUESTION: 12

If earth revolves round the sun is one year. If the distance between them becomes double, the new period of revolution will be

Solution:
QUESTION: 13

The escape velocity on earth is 11.2 ms-1 . Its value for a planet having double the radius and 8 times mass of the earth is

Solution:
QUESTION: 14

The maximum speed that can be achieved without skidding by a car on a circular unbanked road of radius R and coefficient of kinetic friction μ, is

Solution:
QUESTION: 15

The mode of transmission of heat, in which heat is carried by the movement of heated particles, is

Solution:
QUESTION: 16

In Young's double slit experiment, distance between slits is 0.28 mm and distance between slits and screen is 1.4 m. Distance between central bright fringe and third bright fringe is 0.9 cm. What is the wavelength of used light?

Solution:
QUESTION: 17

A perfect gas at 27oC is heated at constant pressure so as to triple its volume. The temperature of the gas will be

Solution:

Since pressure is constant, then QUESTION: 18

Electron of mass m and charge e is travelling with a speed ν along a circular path of radius r at right angles to a uniform magnetic field B. If the speed of the electron is doubled and the magnetic field is halved, the resulting path would have a radius

Solution:
QUESTION: 19

A voltmeter of resistance 20000 Ω reads 5 volt. To make it read 20 volt, the extra resistance required is

Solution:
QUESTION: 20

A length of wire carries a steady current. It is bent first to form a circular coil of one turn. The same length is now bent more sharply to give a double loop of smaller radius. The magnetic field at the centre caused by the same current is

Solution:
QUESTION: 21

The force between two short bar magnets with magnetic moments M₁ and M₂ whose centres are r meter apart is 8 N, when their axes are in same line. If the separation is increased to 2 r, the force between them is reduced to

Solution:
QUESTION: 22

The magnetic field at a point at a distance 'd' from the centre on axial line of a very short bar magnet of magnetic moment M is B. The magnetic field at a distance '2d' from centre on equitorial line of magnet of magnetic moment 8 M, will be

Solution:
QUESTION: 23

If a substance is to be paramagnetic, its atoms must have a

Solution:
QUESTION: 24

The rate of flow of water in a capillary tube of length 'l' and radius 'r' is 'V'. The rate of flow in another capillary tube of length '2l' and radius '2r' for same pressure difference would be

Solution:
QUESTION: 25

A river water is flowing at 0.5 m-s-1. The shearing stress between horizontal layers at a distance of 10 cm of the river water is (Viscosity of water = 0.01 poise)

Solution:
QUESTION: 26

Two wires of the same material and length, but diameters in the ratio 1 : 2 are stretched by the same force. The elastic potential energy stored per unit volume for the two wires when stretched, will be in the ratio of

Solution: QUESTION: 27

Before jumping in water from above a swimmer bends his body to

Solution:
QUESTION: 28

A body dropped from a height h with an initial speed zero, strikes the ground with a velocity 3 km/h. Another body of same mass is dropped from the same height h with an initial speed -u\'=4 km/h. Find the final velocity of second body with which it strikes the ground

Solution:
QUESTION: 29

A pendulum bob of mass 50 gm is suspended from the ceiling of an elevator. The tension in the string if the elevator goes up with uniform velocity is approximately

Solution:
QUESTION: 30

Statement-1: Energy is released when heavy nuclei undergo fission or light nuclei undergo fusion .and
Statement-II: For heavy nuclei , binding energy per nucleon increases with increasing Z while for light nuclei it decrease with increasing Z .

Solution:
QUESTION: 31

A nucleus with Z = 92 emits the following in sequence: α , α , β , β , α , α , α , α ; β − , β − , α , β + , β + , α . The Z of the resulting nucleus is

Solution:   QUESTION: 32

The magnifying power of eye piece in a compound microscope is 5 and the combined magnifying power is 100. The magnifying power of objective lens is

Solution:
QUESTION: 33

The maximum wavelength of radiation that can produce photoelectric effect in certain metal is 200 nm. The maximum kinetic energy acquired by electron due to radiation of wavelength 100 nm will be

Solution:
QUESTION: 34

A particle of mass 10 grams is executing simple harmonic motion with an amplitude of 0.5 m and periodic time of (π/5) seconds. The maximum value of the force acting on the particle is

Solution:
QUESTION: 35

Photons of energy of 6 eV are incident on a metal surface whose work function is 4 eV. The minimum kinetic energy of the emitted photoelectrons will be

Solution: Kinetic energy of the photoelectrons ranges from 0 to maximum KE. So minimum kinetic energy of any photoelectron is always zero. It means these electrons were present in the inner layers of the metal & they just managed to escape from the metal surface but their velocity is zero.
QUESTION: 36

If the horizontal range of a projectile is equal to the maximum height reached, then the corresponding angle of projection is

Solution:

Horizontal range = maximum height reached 4 cosθ = sinθ
tanθ = 4
θ = tan-1 4

QUESTION: 37

A mark at the bottom of a beaker containing liquid appears to rise by 0.1 m. The depth of the liquid is 1 m. The refractive index of liquid is

Solution:
QUESTION: 38

A person using a lens as a simple microscope sees an

Solution:
QUESTION: 39

In the achromatic prism, we have

Solution:
QUESTION: 40

A convex lens of focal length 40 cm is in contact with a concave lens of focal length 25 cm. The power of the combination is

Solution:
QUESTION: 41

Starting from rest the fly sheel of a motor attains an angular velocity of 60 rad s-1 in 5 seconds. The angular acceleration attained is

Solution:
QUESTION: 42

The displacement x (in metres) of a particle performing simple harmonic motion is related to time t (in seconds) as x=0.05 cos[(4πt)+(π/4)]. The frequency of the motion is

Solution:
QUESTION: 43

The time period of a light loaded spring is 3.5 seconds. On changing the load by 1kg, the period decreases by 0.5 seconds. The initial load on the spring is

Solution:
QUESTION: 44

In p-type semiconductor

Solution:
QUESTION: 45

In a good conductor the energy gap between the conduction band and the valence band is

Solution:
QUESTION: 46

Two electric bulbs (60 W and 100 W respectively) are connected in series. The current passing through them is

Solution:
QUESTION: 47

The pressure at the bottom of a tank containing a liquid does not depend on

Solution:
QUESTION: 48

A metallic wire with tension T and at temperature 30oC vibrates with its fundamental frequency of 1 KHz. The same wire the same tension but at 10oC temperature vibrates with a fundamental frequency of 1.001 KHz. The coefficient of linear expansion of the wire is

Solution:
QUESTION: 49

The heat developed in half a minute in a resistor of resistance 5 Ω is 15000 J. The current through the resistor is

Solution:
QUESTION: 50

If 96500 coulombs of electricity liberates one gram equivalent of any substance, the time taken for a current of 0.15 amperes to deposite 20mg of copper from a solution of copper sulphate is (Chemical equivalent of copper =32)

Solution:

Equivalent weight of copper = 32
Charge required to deposit 32 g = 96500 C QUESTION: 51

How much should the pressure of the gas be increased to decrease the volume by 10% at constant temperature?

Solution:
QUESTION: 52

If the amount of heat given to a system be 35 joules and the amount of work done by the system be -15 joules, then the change in the internal energy of the system is

Solution:
QUESTION: 53

When the pressure on water is increased the boiling temperature of water as compared to 100oC will be

Solution:
QUESTION: 54

The dimensional formula of magnetic induction is

Solution:
QUESTION: 55

Dimensional analysis of the equation (velocity)x = (Pressure difference)3/2 (density)-3/2 gives value of x is

Solution:
QUESTION: 56

The golden view of sea shell is due to

Solution:
QUESTION: 57

Two coherent light beams of intensity I and 4I are superposed. The maximum and minimum possible intensities in the resulting beam are

Solution:
QUESTION: 58

Sound waves in air are

Solution:
QUESTION: 59

A light points fixed to one prong of a tuning fork touches a vertical plate. The fork is set vibrating and the plate is allowed to fall freely. If eight oscillations are counted when the plate falls through 10 cm, the frequency of the tuning fork is

Solution:

If t the time to fall through 10 cm, ∴ 1s is taken for 8 x 7 = 56 osc
∴ Frequency = 56 Hz

QUESTION: 60

A long spring is stretched by 2 cm and its elastic potential energy is u. If the same spring is stretched by 10 cm, then its elastic potential energy will be

Solution: