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# Test: Physics Mock- 10

## 45 Questions MCQ Test NEET Mock Test Series | Test: Physics Mock- 10

Description
This mock test of Test: Physics Mock- 10 for NEET helps you for every NEET entrance exam. This contains 45 Multiple Choice Questions for NEET Test: Physics Mock- 10 (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Physics Mock- 10 quiz give you a good mix of easy questions and tough questions. NEET students definitely take this Test: Physics Mock- 10 exercise for a better result in the exam. You can find other Test: Physics Mock- 10 extra questions, long questions & short questions for NEET on EduRev as well by searching above.
QUESTION: 1

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QUESTION: 2

Solution:
QUESTION: 3

### Two blocks of masses 6 kg and 4 kg are placed on a frictionless surface and connected by a spring. If the heavier mass is given a velocity of 14 m/s in the direction of lighter one, then the velocity gained by the centre of mass will be

Solution: QUESTION: 4
A lift is moving with a retardation of 5 ms-1. The percentage change in the weight of person in the lift is (g = 10 ms-2)
Solution:
QUESTION: 5

A particle moves in a circular orbit under the action of a central attractive force inversely proportional to the distance 'r'. The speed of the particle is

Solution: QUESTION: 6

When a current flows through a conductor its temperature

Solution:

As we know,

Power=I2R

Therefore, this power is released in the form of heat in the conductor and this heat increases the temperature of the conductor.

Hence, temperature increases.

QUESTION: 7
A lead-acid battery of a car has an e.m.f. of 12 V. If the internal resistance of the battery is 0.5 ohm, the maximum current that can be drawn from the battery will be
Solution:
QUESTION: 8
The cathode rays have particle nature because of the fact that
Solution:
QUESTION: 9

Choke coil works on the principle of

Solution:
QUESTION: 10
A bar magnet dropped into a coil of a conducting wire, along its axis, will fall with an acceleration
Solution:
QUESTION: 11

An infinite number of charge of equal magnitude q, but of opposite sign are placed along the X-axis at x = 1, x = 2, x = 4, x = 8... and so on. The electric potential at the point x = 0 due to these charge will be

Solution: QUESTION: 12

The capacity of a condenser with two identical plates separated by a distance 'd' in air is 'C'. If the distance of separation is reduced to d/2 , the capacity is

Solution:
QUESTION: 13

The escape velocity of an object from the earth depends upon the mass of the earth (M), its mean density (ρ),its radius (R) and gravitational constant (G). Thus the formula for escape velocity is

Solution:
QUESTION: 14

On the horizontal surface of a truck (μ=0.6), a block of mass 1 kg is placed.If the truck is accelerating at the rate of 5 m/sec2 then frictional force on the block will be

Solution:

If the block has to move, it should overcome static frictional force which is μmg = 0.6×10 = 6N

As the truck is moving with an acceleration, a pseudo force acts on the block which is ma = 1×5 = 5N

As this force is not enough for the block to move, an equal frictional force acts in the opposite direction which is equal to 5N

QUESTION: 15

Two stars of mass m1 and m2 are parts of a binary star system. The radii of their orbits are r1 and r2 respectively, measured from the C.M. of the system. The magnitude of gravitational force m1 exerts on m2 is

Solution:
QUESTION: 16
A black body radiates at the rate of W watts at a temperature T. If the temperature of the body is reduced to T/3, it will radiate at the rate of (in Watts)
Solution:
QUESTION: 17

A current carrying circular loop is freely suspended by a long thread. The plane of the loop will point in the direction

Solution:
QUESTION: 18
If the kinetic energy of one mole of an ideal gas is given as E=3/2 RT, (where R is the universal gas constant and T is the absolute temperature of the gas), the molar specific heat at constant pressure will be given as
Solution:
QUESTION: 19
A wire in the form of a circular loop, of one turn carrying a current, produces magnetic induction B at the centre. If the same wire is looped into a coil of two turns and carries the same current, the new value of magnetic induction at the centre is
Solution:
QUESTION: 20

The effective length of a magnet is 31.4 cm, and its pole strength is 0.5 A-m. If it is bent in the form of a semicircle,then its new magnetic moment will be

Solution:
QUESTION: 21

A capillary tube when immersed vertically in a liquid records a rise of 3 mm. If the tube is immersed in the liquid at an angle of 60o with the vertical, then height of the liquid in the capillary tube will be

Solution:
QUESTION: 22

A wire of length L and cross-section A is made of material of Young's modulus Y. If it is stretched by an amount x, then work done is

Solution:
QUESTION: 23
Two discs of the same material and thickness have radii 0.2 m and 0.6 m. Their moments of inertia about their axes will be in the ratio
Solution:
QUESTION: 24
A boat at anchor is rocked by waves whose crests are 100 m apart and whoose velocity is 25 m/sec. These waves reach the boat after every
Solution:
QUESTION: 25

A coastguard ship locates a pirate ship at a distance 560 m. It fires a cannon ball with an initial speed 82 m/s. At what angle from horizontal the ball must be fired so that it hits the pirate ship?

Solution:
QUESTION: 26
The weight of a man in a lift moving upwards is 608N, while the weight of same man in the lift moving downwards with the same acceleration is 368N. His normal weight in newtons is
Solution:
QUESTION: 27

A stone tied to the end of a string of 1 m long is whirled in a horizontal circle with a constant speed. If the stone makes 22 revolution in 44 seconds, what is the magnitude and direction of acceleration of the stone?

Solution:
QUESTION: 28
The normal magnifying power of a simple microscope is 6. The focal length of the convex lens used is
Solution:
QUESTION: 29
On a planet, a body takes 2 s to reach the surface when dropped from a height of 8 m. The time period of a simple pendulum of length 1 m on that planet is
Solution:
QUESTION: 30

Two projectiles are fired at different angles with the same magnitude of velocity, such that they have the same range. At what angles they might have been projected?

Solution:

For equal range, the particle should either be projected at an angle θ or (90 - θ) QUESTION: 31
To print a photograph from a negative, the time of exposure to light from a lamp placed 0.5 m is 2.5 s. If the lamp is placed 1 m away, then time of exposure will be
Solution:
QUESTION: 32

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

Solution:
QUESTION: 33
In an orbital motion, the angular momentum vector is
Solution:
QUESTION: 34

The dimensional formula for torque is

Solution:
QUESTION: 35
Kerosene oil rises up the wick in a lantern
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QUESTION: 36
Electric bulb 50 W-100 V glowing at full power are to be used in parallel with battery 120 V, 10Ω. Maximum number of bulbs that can be connected so that they glow in full power is
Solution:
QUESTION: 37
An electric kettle has two heating coils. When one of the coild is connected to an a.c. source, the water in the kettle boils in 10 min. When the other coil is used, the water boils in 40 min. If both the coils are connected in parallel, then time-taken by the same quantity of water to boil will be
Solution:
QUESTION: 38
First law of thermodynamics is a special case of
Solution:
QUESTION: 39

19g of water at 30oC and 5g of ice at − 20oC are mixed together in a calorimeter. What is the final temperature of the mixture ? Given specific heat of ice = 0.5 cal g− 1 (oC)− 1 and latent heat of fusion of ice = 0.8 cal g−1

Solution:
QUESTION: 40
If u₁ and u₂ are the units selected in two systems of measurement and n₁ and n₂ their numerical values, then
Solution:
QUESTION: 41
Length cannot be measured by
Solution:
QUESTION: 42
Light was producing interference have their amplitudes in the ratio 3:2. The intensity ratio of maximum and minimum of interference fringes is
Solution:
QUESTION: 43
Two tuning forks A and B vibrating simultaneously produce 5 beats. Frequency of B is 512. It is seen that if one arm of A is filled, then the number of beats increases. Frequency of A will be
Solution:
QUESTION: 44
n small balls each of mass m impinge elastically each second on a surface with velocity u. The force experienced by the surface will be
Solution:
QUESTION: 45
A mass of 20 kg moving with a speed of 10 m/s collides with another stationary mass of 5 kg. As a result of the collision, the two masses stick together. The kinetic energy of the composite mass will be
Solution: