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# Test: Physics Mock- 7

## 45 Questions MCQ Test NEET Mock Test Series | Test: Physics Mock- 7

Description
This mock test of Test: Physics Mock- 7 for NEET helps you for every NEET entrance exam. This contains 45 Multiple Choice Questions for NEET Test: Physics Mock- 7 (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Physics Mock- 7 quiz give you a good mix of easy questions and tough questions. NEET students definitely take this Test: Physics Mock- 7 exercise for a better result in the exam. You can find other Test: Physics Mock- 7 extra questions, long questions & short questions for NEET on EduRev as well by searching above.
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QUESTION: 2

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QUESTION: 3

### Which of the following is a correct statement?

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QUESTION: 4
A bomb travelling in a parabolic path under the effect of gravity explodes in mid air. The centre of mass of fragments will
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QUESTION: 5
A heating coil is labelled as 100 W and 220 V. The coil is cut into two equal pieces, then joined in parallel to the same source. Now power of the heating coil will become
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QUESTION: 6
A small body, attached by a string to a fixed point, describes a horizontal circle with uniform angular speed. Then its distance below the fixed point depends—
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QUESTION: 7
A body 'A' experiences perfectly elastic collision with a stationary body 'B' . If after collision the bodies fly apart in the opposite directions with equal velocities, the mass ratio of 'A' and 'B' is
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QUESTION: 8
A strip of copper and another of germanium are colled from room temperature to 80 K. The resistance of
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QUESTION: 9
The working of a dynamo is based on principle of
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QUESTION: 10

A step-up transformer has transformation ratio of 3:2 What is the voltage in secondary, if voltage in primary is 30 V ?

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QUESTION: 11
A condenser stores
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QUESTION: 12
Radius of the earth is 6400 km. The radius of the orbit of a stationary satellite is about
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QUESTION: 13

A space-craft is launched in a circular orbit very close to earth. What additional velocity should be given to the space craft so that it might escape the earth's gravitational pull ? (radius of the earth = 6400 km, g = 9.8 m/s2)

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QUESTION: 14

The figure shows a charge q placed inside a cavity in an uncharged conductor. Now if an external electric field is switched on:

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QUESTION: 15
Consider a compound slab consisting of two different materials having equal thickness and thermal conductivities K and 2K respectively. The equivalent thermal conductivity of the slab is
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QUESTION: 16

A vehicle of mass m is moving on a rough horizontal road with momentum P. If the coefficient of friction between the tyres and the road be μ, then the stopping distance is

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QUESTION: 17
Average kinetic energy of a gas molecule depends on
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QUESTION: 18

Two parallel wires of length 9m each are separated by a distance of 0.15m. If they carry equal currents in the same direction and exert a total force of 30 x 10 −7 N on each other, the value of current must be

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QUESTION: 19

Two liquids of densities ρ₁ and ρ₂ and coefficients of viscosity η₁ and η₂ are found to flow through a capillary tube at the same rate. The ratio of η₁/η₂ is

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QUESTION: 20
A cube is subjected to a uniform volumatric compression. If side of cube decreases by 1%, then its bulk strain is
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QUESTION: 21
A galvanometer can be changed into an ammeter by using
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QUESTION: 22

The couple acting on a magnet of length 10cm placed in a uniform magnetic field of intensity 40N/wb such that the axis of the magnet makes 45o with the field direction is √ 2 ∕ 10 Nm. The pole strength of the magnet in webers

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QUESTION: 23

A ball is dropped on the floor from a height of 10 m. It rebounds to a height of 2.5 m. If the ball is in contact with the floor for 0.01 sec, the average acceleration during contact is

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QUESTION: 24

At the uppermost point of a projectile, angle between the directions of its velocity and acceleration is

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QUESTION: 25

The velocity of a body at time t = 0 is 10√2 m/s in the north-east direction and it is moving with an acceleration of 2 m/s2 directed towards the south. The magnitude and towards the south. The magnitude and direction of the velocity of the body after 5 sec will be

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QUESTION: 26

Moment of inertia of a thin circular disc of mass M and radius R about any diameter is

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QUESTION: 27
A body of mass 2 kg is moving with a velocity 8 m/s on a smooth surface. If it is to be brought to rest in 4 seconds, then force to be applied is
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QUESTION: 28
In a camera, f-number represents
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QUESTION: 29
A pendulum after some time becomes slow in motion and finally stops due to
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QUESTION: 30

If at a height of 40 cm, the direction of motion of a projectile makes an angle π/4 with the horizontal, then its initial velocity and angle of projection are. respectively

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QUESTION: 31

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

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QUESTION: 32
A mass M is moving with a constant velocity along a line parallel to x-axis. Its angular momentum with respect to origin or z-axis is
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QUESTION: 33
The width of a river is 25 m and water is flowing in it with a speed of 4m/min. A boatman is standing on the bank of the river. He wants to sail the boat to a point on the other bank directly opposite to him. He can sail the boat at 8 m/min relative to water. He will cross the river in
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QUESTION: 34

The angle between the vector A=2î+3ĵ and the y-axis is

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QUESTION: 35
The temperature at which thermal electric power of a thermo couple becomes zero is called
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QUESTION: 36
Kerosene oil rises up the wick in a lantern
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QUESTION: 37

The neutral temperature of thermocouple is 350oC, when the cold junction is 0oC. When the cold junction is immersed in a bath of 30oC, the inversion temperature is

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QUESTION: 38
When a Van der Waals' gas undergoes free expansion then its temperature
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QUESTION: 39
A perfect gas contained in a cylinder is kept in vacuum. If the cylinder suddenly bursts, then the temperature of the gas
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QUESTION: 40

Which is not a unit of electric field

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QUESTION: 41

A physical quantity x depends on quantities y and z as follows; x= Ay+BtanCz, where A, B, and C are constants. Which of the following do not have the same dimensions

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QUESTION: 42
The light from a sodium vapour lamp passes through a single narrow slit and then through two close, parallel narrow slits. The single slit lies on the perpendicular bisector of the line joining the two close, parallel slits. An observer looking towards the lamp through the double slit will see
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QUESTION: 43
Ultrasonic waves are produced by
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QUESTION: 44
A quarter horse power motor runs at a speed of 600 r.p.m. Assuming 40% efficiency the work done by the motor in one rotation will be
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QUESTION: 45

A body of mass m₁ moving with a velocity 3 ms⁻1 collides with another body at rest of mass m₂. After collision the velocities of two bodies are 2 ms⁻1 and 5 ms⁻1 respectively along the direction of motion of m₁. The ratio m₁/m₂ is

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