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This mock test of JIPMER Physics Mock Test - 9 for NEET helps you for every NEET entrance exam.
This contains 60 Multiple Choice Questions for NEET JIPMER Physics Mock Test - 9 (mcq) to study with solutions a complete question bank.
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QUESTION: 1

A cell of 1.5 V is connected across an inductor of 2 mH in series with a 2Ω resistor. The rate of growth of current immediately after the cell is switched ON, is

Solution:

QUESTION: 2

The threshold frequency for photo electric effect for a metal surface is found to be 4.8 x 10^{16} Hz . The stopping potential required when the metal is irradiated by radiation of frequency 5.6 x 10^{16} Hz is (taking h = 6.6 x 10^{-34} J sec and e = 1.6 x 10^{-19} C)

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QUESTION: 3

An uncharged capacitor is connected to a battery. On charging the capacitor,

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QUESTION: 4

A solenoid of length 20 cm area of cross-section 4 cm^{2} and having 4000 turns is placed inside another solenoid of 2000 turns having a cross-section area 8 cm^{2} and length 10 cm. The mutual inductance of the system is

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QUESTION: 5

A 1 kg stone at the end of 1 m long string is whirled in a vertical circle at constant speed of 4 m/sec. The tension in the string is 6 N,when the stone is at (g = 10m/sec^{2})

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QUESTION: 6

There are three resistance coils of equal resistance. The maximum number of resistances you can obtain by connecting them in any manner you choose, being free to use any number of the coils in any way is

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QUESTION: 7

A cell supplies a current of 0.9 A through a 2 Ω resistor and a current of 0.3 A through 7 Ω resistor. The internal resistances of the cell is

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QUESTION: 8

The core used in a transformer is laminated in order to

Solution:

Lamination of core reduces energy losses an account of eddy currents.

QUESTION: 9

Out of the folowing statement which is NOT true?

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QUESTION: 10

When we touch the terminals of a high voltage capacitor, even after a high voltage has been cut off, then the capacitor has a tendency to

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QUESTION: 11

The capacity of a condenser 'A' is 10 μF and it is charged by a battery of 100V. The battery is disconnected and the condenser is connected to a condenser 'B'. The common potential is 40V. The capacity of 'B' is

Solution:

QUESTION: 12

Consider a car moving along a straight horizontal road with a speed of 72 km/h. If the coefficient of static friction between the tyres and the road is 0.5 the shortest distance in which the car can be stopped is [g=10 ms^{-2}]

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QUESTION: 13

The mass of moon is about 1.3% of mass of the earth. Compared to the gravitational force the earth exerts on the moon, the gravitational force the moon exerts on the earth

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QUESTION: 14

If g is the acceleration due to gravity at the earth's surface and r is the radius of the earth, the escape velocity for the body to escape out of earth's gravitational field is

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QUESTION: 15

Consider the following statements

Assertion (A) : Woolen clothes keep the body warm in winter

Reason (R) : Air is a bad conductor of heat

Of these statements

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QUESTION: 16

In the ideal double slit experiment, when a glass plate of refractive index 1.5 and thickness t is introduced in the path of one of the interfering beams of wavelength λ, the intensity at the position of central max. remains unchanged. Minimum thickness of glass plate is

Solution:

QUESTION: 17

A cyclotron oscillator frequency is 10 MHz. If radius of its dees 60 cm, then magnetic field for accelerating the protons is (Given e = 1.6 x 10^{-19}C, mp = 1.67 x 10^{-27} kg)

Solution:

v = 10 MHz = 10 x 10^{6} Hz = 10^{7} Hz

R = rm = 60 cm = 0.6 m

e = 1.6 x 10^{-19} C

m = 1.67 x 10^{-27} kg

resonance v = Be/2πm

or B = 2πmv/e

= 2 x 3.14 x 1.67 x 10^{ −27} x 10^{7 }/1.6 x 10^{ −19 }

= 0.66 tesla

QUESTION: 18

Maxwell's law of distribution of velocities shows that:

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QUESTION: 19

A long solenoid of length L has a mean diameter D. It has n layers of winding of N turns each. If it carries a current I, the magnetic field at its centre will be

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QUESTION: 20

A positive charge is moving upwards in a magnetic field which is towards north. The particle will be deflected towards

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QUESTION: 21

Curie temperature is the temperature above which

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QUESTION: 22

At the magnetic north pole of the earth, the value of the horizontal component of earth's magnetic field and angle of dip are respectively

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QUESTION: 23

Air is streaming over both the aeroplane wings such that its speed is 85 m-s^{-1} over the upper surface and 75 m-s^{-1 }at the lower surface. If the wings are 10 m long and have an average width of 2 m, then lift of the wind on aeroplane is (Take density of air = 1.5 kg-m^{-3})

Solution:

QUESTION: 24

A bar magnet of magnetic moment 6.4 A-m^{2} is placed in a uniform magnetic field of 0.4 T. What is the torque acting on the magnet, when its axis makes an angle of 60^{o} with the magnetic field?

Solution:

QUESTION: 25

A copper wire of length 4 m and area of cross-section 1.2 cm^{2} is stretched with a force of 4.8 x 10^{3} N. If the Young's modulus for copper is 1.2 x 10^{11} N-m^{-2}, then increase in the length of the wire will be

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QUESTION: 26

The surface tension of soap solution is 25 x 10^{-3} N-m^{-1}. The excess pressure inside a soap bubble of diameter 1 cm is

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QUESTION: 27

A solid cylinder has mass M, length L and radius R. The moment of inertia of this cylinder about a generator is

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QUESTION: 28

A body A starts from rest with an acceleration a₁. After 2 s, another body B starts from rest with an acceleration a₂. If they travel equal distances in the 5th second, after the start of A, then the ratio a₁ : a₂ is equal to is equal to

Solution:

QUESTION: 29

A wagon 1000 kg is moving with a velocity 50 km/h on smooth horizontal rails. A mass of 250 kg is dropped into it. The velocity with which it moves now is

Solution:

m_{1}u = m_{2}v

1000 x 50 = (1000 + 250) ν, ν = 40 km / hr.

QUESTION: 30

The minimum magnifying power of a telescope is M. If the focal length of its eye-lens is halved, the magnifying power will become

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QUESTION: 31

In the following reaction, the energy released is

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QUESTION: 32

The radio of the radii of the nuclei _{13}Al^{27} and _{52}Te^{152} is

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QUESTION: 33

In a simple pendulum, if K.E. is one fourth of total energy, then displacement (x) is related to amplitude A, as

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QUESTION: 34

The photoelectric work function for a metal surface is 4.125 eV. The cut-off wavelength for this surface is

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QUESTION: 35

The work function of a metal is 2.8 eV. Its threshold wavelength will be

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QUESTION: 36

A symmetric double convex lens is cut in two equal parts by a plane perpendicular to the principal axis. If the power of the original lens is 4D, the power of a cut lens will be

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QUESTION: 37

In the achromatic prism, we have

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QUESTION: 38

The resolving power of a telescope depends on

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QUESTION: 39

The range of projectile when launched at an angle of 15^{o} with the horizontal is 1.5 km. What is the range of the projectile when launched at an angle of 45^{o} to the horizontal

Solution:

The Horizontal Range of Projectile motion is given by

symbol has their usual meaning

In question it is given that

then R = 1.5 km, θ = 15^{o} ,R = ?, θ = 45^{o}

Then by equation (i)

R_{1}/R_{2} = sin 30 /sin 30

R_{2} = 3 Km

QUESTION: 40

Two plano-convex lenses of radius of curvature R and refractive index μ=2.5 will have equivalent focal length equal to R, when they are placed

Solution:

QUESTION: 41

Two spherical bodies of masses M and 5 M and radii R and 2 R respectively are released in free space with intial separation between their centres equal to 12 R. If they attract each other due to gravitational force only, then the distance covered by the smaller body just before collision is

Solution:

QUESTION: 42

Two identical springs are connected (a) in series and (b) in parallel. The combination supports a mass at the lower end. The ratio of the periods of vertical oscillations of the mass in series and parallel combinations is

Solution:

QUESTION: 43

A body of mass 5 gm is executing S.H.M. about a point with amplitude 10 cm. Its maximum velocity is 100 cm/sec. Its velocity will be 50 cm/sec at a distance

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QUESTION: 44

Intrinsic semiconductor is electrically neutral. Extrinsic semiconductor having large number of current carriers would be

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QUESTION: 45

Covalent bond exists in

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QUESTION: 46

Two uniform wires are vibrating simultaneously in their fundamental modes. The tensions, lengths, diameters and the densities of the two wires are in the ratio's 8 : 1, 36 : 35, 4 : 1 and 1 : 2 respectively. If the note of the higher pitch has a frequency 360 Hz, the number of beats produced per second is

Solution:

QUESTION: 47

If liquid level falls in a capillary then radius of capillary will be

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QUESTION: 48

A silver voltameter of resistance 2 ohm and a 3 ohm resistor are connected in series across a cell. If a resistance of 2 ohm is connected in parallel with the voltameter, then the rate of deposition of silver

Solution:

QUESTION: 49

A 500 watt heating unit is designed to operate from a 115 volt line. If the line voltage dropes to 110 volt, the percentage drop in heat output will be

Solution:

QUESTION: 50

The charging of a battery is based on which of the following effect of electric current?

Solution:

QUESTION: 51

If a cylinder of diameter 1.0 cm at 30^{o}C is to be slide into a hole of diameter 0.9997cm in a steel plate at the same temperature, then minimum required rise in the temperature of the plate is [coefficient of linear expansion of steel = 12 x 10^{-6} ∕ ^{o}C ]

Solution:

QUESTION: 52

The work done in an adiabatic change in a gas depends only on

Solution:

QUESTION: 53

The work of 146*kJ* is performed in order to compress one kilo mole of a gas adiabatically and in this process the temperature of the gas increases by 7^{o}*C*. The gas is

( R = 8.3 J mol^{-1}K ^{-1})

Solution:

QUESTION: 54

Which of the following represents a volt

Solution:

QUESTION: 55

Which of the following pair has same dimensions?

Solution:

QUESTION: 56

In Young's double slit experiment, an interference pattern is obtained on a screen by a light of wavelength 6000 Å coming from the coherent sources S_{1} and S_{2}. At certain point *P* on the screen third dark fringe is formed. Then the path difference S_{1}p − S_{2}p in microns is

Solution:

QUESTION: 57

In the propagation of light waves, the angle between the direction of vibration and plane of polarisation is

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QUESTION: 58

The equation of the propagating wave is y = 25 sin(20t + 5x), where y is displacement. Which of the following statement is not true

Solution:

QUESTION: 59

Sound velocity is maximum in

Solution:

QUESTION: 60

A force acts on a 30 gm particle in such a way that the position of the particle as a function of time is given by x = 3t - 4t^{2} + t^{3}, where x is in metres and t is in seconds. the work done during the first 4 seconds is

Solution:

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