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# Test: Physics Mock- 1

## 45 Questions MCQ Test NEET Mock Test Series | Test: Physics Mock- 1

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

Solution:

QUESTION: 2

Solution:
QUESTION: 3

### 50 Ω and 100 Ω resistors are connected in series. This connection is connected with a battery of 2.4 volts. When a voltmeter of 100 Ω resistance is connected across 100 Ω resistor, then the reading of the voltmeter will be

Solution:
QUESTION: 4

A system consists of two identical particles one particle is at rest and the other particle has an acceleration 'a'. The centre of mass of the system has an acceleration of

Solution:
QUESTION: 5
A particle is moving in a horizontal circle with constant speed. It has constant
Solution: The displacement, velocity and acceleration are vector quantities
They are changing but kinetic energy remains constant because the speed is constant
Hence the correct choice is Kinetic energy
QUESTION: 6

Two resistances of 400 Ω and 800 Ω are connected in series with 6 volt battery of negligible internal resistance. A voltmeter of resistance 10,000 Ω is used to measure the potential difference across 400 Ω. The error in the measurement of potential difference in volts approximately is

Solution:

QUESTION: 7
A gun fires a bullet of mass 50 gm with a velocity of 30 ms-1. Because of this the gun is pushed back with a velocity of 1 ms-1. Mass of the gun is
Solution:
QUESTION: 8

The core of a transformer is laminated so that

Solution:
QUESTION: 9

The de-Broglie wavelength associated with proton changes by 0.25% if its momentum is changed by P₀. The initial momentum was

Solution:

QUESTION: 10
In an ac circuit, with voltage V and current I the power dissipated is
Solution:
QUESTION: 11
The capacitance of a parallel plate capacitor is 10 μF when distance between its plates is 8 cm. If distance between the plates is reduced to 4 cm, its capacitance will be
Solution:
QUESTION: 12

A horizontal force, just sufficient to move a body of mass 4kg lying on a rough horizontal surface is applied on it. The coefficients of static and kinetic friction between the body and the surface are 0.8 and 0.6 respectively. If the force continues to act even after the block has started moving, the acceleration of the block in m s−2 is [g = 10 m s − 2 ]

Solution:
QUESTION: 13
A body of mass m is placed on the earth's surface. It is taken from the earth's surface to a height h = 3R. The change in gravitational potential energy of the body is
Solution:
QUESTION: 14

A capacitor of capacity 10 μ F is charged to 40V and a second capacitor of capacity 15 μ F is charged to 30V. If they are connected in parallel the amount of charge that flows from the smaller capacitor to higher capacitor in μ C is

Solution:

QUESTION: 15
A rocket can go vertically upwards in earth's atmosphere because
Solution:
QUESTION: 16

The earth radiates in the infra-red region of the spectrum. The spectrum is correctly given by

Solution:

Wien's law states that when the temperature of a black body radiator increases, the overall radiated energy increases and the peak of the radiation curve moves to shorter wavelengths.

QUESTION: 17
A gas at 300 K, enclosed in a container is placed in a fast moving train. When the train is in motion, then temperature of the gas
Solution:
QUESTION: 18
If only 2% of the main current is to be passed through a galvanometer of resistance G, then the resistance of shunt will be
Solution:
QUESTION: 19

If an electron revolve in the path of a circle of radius of 0.5 x 10 − 10 m at a frequency of 5 x 10 5 cycles/sec. The electric current in the circle is (charge of an electron = 1.6 x 10−19 C)

Solution:
QUESTION: 20
There is no couple acting when two bar magnets are placed coaxially separated by a distance because:
Solution:
QUESTION: 21
If two soap bubbles of different radii are connected by a tube, then
Solution:
QUESTION: 22
A metallic wire is suspended by attaching some weight to it. If α is the longitudinal strain and Y is Young's modulus, then the ratio between elastic potential energy and the energy density is equal to
Solution:
QUESTION: 23

A bus is moving with a speed of 10 ms−1 on a straight road. A scooterist wishes to overtake the bus in 100 s. If the bus is at a distance of 1 km from the scooterist, with what speed should the scooterist chase the bus?

Solution:
QUESTION: 24

Two stones are projected with the same speed but making different angles with the horizontal. Their horizontal ranges are equal. The angle of projection of one is π/3 and the maximum height reached by it is 102 m. Then the maximum height reached by the other in metre is

Solution:
QUESTION: 25
A tachometer is a device to measure
Solution:
QUESTION: 26

A 5000 kg rocket is set for vertical firing. The exhaust speed is 800 ms⁻1. To give an initial upward accleration of 20 ms⁻2. the amount of gas ejected per second to supply the needed thrust will be (g=10 ms⁻2)

Solution:
QUESTION: 27

The M.I. of a body about the given axis is 1.2 kg m2 initially the body is at rest. In order to produce a rotational kinetic energy of 1500 joule an angular acceleration of 25 rad/sec2 must be applied about that axis for a duration of

Solution:

QUESTION: 28
The magnifying power of a telescope is 'm'. If the focal length of the eye piece is doubled, then its magnifying power will become
Solution:
QUESTION: 29
To make the frequency double of a spring oscillator, we have to
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
The resolving power of a telescope depends on
Solution:
QUESTION: 32
Three identical metal balls each of radius r are placed touching each other on a horizontal surface such that an equilateral triangle is formed, when centres of three balls are joined. The centre of the mass of system is located at
Solution:
QUESTION: 33
Which of the following is a scalar quantity?
Solution:
QUESTION: 34

The dimensional formula M0L2T-2 stands for

Solution:

Latent heat = Energy/Mass = M0L2T-2

QUESTION: 35
Water rises to a height h in a capillary at the surface of earth. On the surface of the moon the height of water column in the same capillary will be
Solution:
QUESTION: 36
Two 220 V, 100 W bulbs are connected first in series and then in parallel. Each time the combination is connected to 220 V ac supply line. The power drawn by the combination in each case respectively will be
Solution:
QUESTION: 37

Two voltmeters, one of copper and the other of silver, are joined in parallel. When a total charge q flows through the voltmeters, equal amount of metals are deposited on their respective cathodes. If the electrochemical equivalents of copper and silver are z1 and z2 respectively, then charge which flows through the silver voltmeter is

Solution:

QUESTION: 38

540 g of ice at 0oC is mixed with 540 g of water at 80oC. The final temp. of the mixture in oC will be

Solution:
QUESTION: 39

Water falls from a height of 210 m. Assuming whole of energy due to fall is converted into heat the rise in temperature of water would be (J = 4.3 Joule/cal)

Solution:

Δθ=0.0023h=0.0023x210=0.483degreeC≈0.49degreeC.

QUESTION: 40
Par sec is a unit of
Solution:
QUESTION: 41

The dimensions of electrical resistance are

Solution:

Since according to Ohm's Law :

V=IR

From the above equation

QUESTION: 42
Which of the following phenomena establish the wave nature of light?
Solution:
QUESTION: 43
A source of sound of frequency 500 hz is moving towards an observer with velocity 30 m/s. The speed of sound is 330 m/s. The frequency heard by the observer will be
Solution:
QUESTION: 44
A body of mass 50 kg slides over a horizontal distance of 1 m. If coefficient of friction between their surfaces is 0.2, then work done against friction is
Solution:
QUESTION: 45
Two bodies having same mass 40 kg are moving in opposite directions, one with a velocity of 10 m/s and the other with 7 m/s. If they collide elastically and move as one body, the velocity of the combination is
Solution: