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# Test: Physics Mock- 2

## 45 Questions MCQ Test NEET Mock Test Series | Test: Physics Mock- 2

Description
This mock test of Test: Physics Mock- 2 for NEET helps you for every NEET entrance exam. This contains 45 Multiple Choice Questions for NEET Test: Physics Mock- 2 (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Physics Mock- 2 quiz give you a good mix of easy questions and tough questions. NEET students definitely take this Test: Physics Mock- 2 exercise for a better result in the exam. You can find other Test: Physics Mock- 2 extra questions, long questions & short questions for NEET on EduRev as well by searching above.
QUESTION: 1

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QUESTION: 2

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QUESTION: 3

### During X-ray formation if voltage is increased

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QUESTION: 4
Four particles, each of mass 1kg, are placed at the corners of a square of side one metre in the XY-plane. If the point of intersection of the diagonal of the square is taken as a origin, the coordinates of the centre of mass are:
Solution:
QUESTION: 5
The current flowing through a wire depends on time as I = 3t2 + 2t +5. The charge flowing through the cross-section of the wire in time from t = 0 to t = 2 sec. is
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QUESTION: 6
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: 7
Three resistors each of 2 ohm are connected together in a triangular shape. The resistance between any two vertices will be
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QUESTION: 8

The primary and secondary coils of a transformer have 50 and 1500 turns respectively. If the magnetic flux φ linked with the primary coil is given by φ = φ 0 + 4t, where φ is in weber, t is time in second and φ 0 is a constant, the output voltage across the secondary coil is

Solution: QUESTION: 9

Angular displacement θ of a fly wheel varies with time as θ = at + bt2 + ct3, then angular acceleration is given by

Solution: QUESTION: 10
In an L-R circuit, time constant is that time in which current grows from zero to the value
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QUESTION: 11

Eight dipoles of charges of magnitude are placed inside a cube. The total electric flux coming out of the cube will be

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QUESTION: 12
The capacity of a condenser 'A' is 10 $\mu$F 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
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QUESTION: 13
A heavy uniform chain lies on a horizontal table-top. If the coefficient of friction between the chain and table surface is 0.25, then the maximum fraction of length of the chain, that can hang one edge of the table is
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QUESTION: 14
Kepler discovered
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QUESTION: 15

If density of earth increased 4 times and its radius become half of what it is, our weight will

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QUESTION: 16
A partition wall has two layers A and B in contact, each made of different material. They have the same thickness but the thermal conductivity of layer A is twice that of layer B. If the steady state temperature difference across the wall is 60 K, then the corresponding difference across the layer A is
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QUESTION: 17
Under constant temperature, graph between P and 1/V is a
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QUESTION: 18

Two long parallel wires carry equal current I in the same direction. The length of each wire is l and the distance between them is a. Force acting on each wire is

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QUESTION: 19
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
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QUESTION: 20

The magnetic compass is not useful for navigation near the magnetic poles. Since

Solution: At the magnetic poles, a dip needle stands vertical (dip=90 degrees), the horizontal intensity is zero, and a compass does not show direction. At the north magnetic pole, the north end of the dip needle is down; at the southmagnetic pole, the north end is up. At the magnetic equator the dip or inclination is zero so option C
QUESTION: 21

A spherical drop of water has 1 mm radius. If the surface tension of water is 70 x 10⁻3 N-m⁻1, then difference of pressures between inside and outside of spherical drop is

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QUESTION: 22
According to the Hooke's law, if stress is increased, then ratio of stress to strain
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QUESTION: 23
The moment of inertia of a body comes into play
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QUESTION: 24

A body freely falling from rest has a velocity ν after it falls through a height h. The distance it has to fall down furthur for its velocity to become double, is

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QUESTION: 25
A bomb is dropped from an aeroplane moving horizontally at constant speed. When air resistance is taken into consideration, the bomb will
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QUESTION: 26
Which of the following cannot be resultant of the vectors of magnitude 5 and 10?
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QUESTION: 27

A lift of mass 1000 kg is moving with an acceleration of 1 m/s2 in upward direction. Tension developed in the string, which is connected to the lift, is

Solution:

The mass of the lift is 1000 Kg , the acceleration of 1 m / s^2 and the acceleration due to gravity is 9.8 m / s^2 .

The tensions developed in strings is given as ,

T = mg + ma

===》 1000 × 9.8 + 1000 × 1

=====》 10800 N

Thus , the tensions developed in strings is 10800 N.

QUESTION: 28

A pendulum bob has a speed of 3 m/s at its lowest position. The pendulum is 0.5 m long. The speed of the bob, when the length makes an angle of 60o to the verticle, will be (If g=10 m/s2)

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QUESTION: 29
A ball is thrown upwards and it returns to ground describing a parabolic path. Which of the following remains constant
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QUESTION: 30

The radius of gyration of a uniform rod of length L about on axis passing through its centre of mass is

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QUESTION: 31
Four lenses of focal length + 15 cm, + 20 cm, + 150 cm and + 250 cm are available for making an astronomical telescope. To produce the largest magnification, focal length of the eye-piece should be
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QUESTION: 32
A convex lens will become less convergent in
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QUESTION: 33
Five equal forces of 10 N each are applied at one point and all are lying in one plane. If the angles between them are equal, the resultant of these forces will be
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QUESTION: 34

Water rises in a capillary tube when its one end is dipped vertically in it, is 3 cm. If the surface tension of water is 75 x 10⁻3 N/m, then the diameter of capillary will be

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QUESTION: 35
A 220 volt and 800 watt electric kettle and three 220 volt and 100 watt bulbs are connected in parallel. On connecting this combination with 220 volt electric supply, the total current will be
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QUESTION: 36
A boat takes 2 hours to travel 8 km and back in still water. If the velocity of the water is 4 km/hr, then the time taken for going upstream of 8 km and then coming back would be
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QUESTION: 37
A battery of e.m.f. 10 V and internal resistance 0.5 ohm is connected across a variable resistance R. The value of R for which the power delivered in it is maximum is given by
Solution:
QUESTION: 38

If a ball of 80 kg mass hits an ice cube and temperature of ball is 100oC, how much ice becomes water? Specific heat of ball is 0.2 cal/gram.

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QUESTION: 39
If the door of a refrigerator is kept open, then which of the following is true
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QUESTION: 40

The unit of absolute permittivity is

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QUESTION: 41
The physical quantity which has dimensional formula as that of Energy/mass x length is
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QUESTION: 42
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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QUESTION: 43
Which of the following do not require medium for transmission
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QUESTION: 44

A constant power P is applied to a car starting from rest. If v is the velocity of the car at time t, then

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QUESTION: 45

The force constant of a weightless spring is 16 N/m. A body of mass 1.0 Kg suspended from it is pulled down through 5 cm and then released. The maximum kinetic energy of the system will be

Solution: