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# NEET UG Physics Mock Test 6

## 45 Questions MCQ Test NEET Mock Test Series & Past Year Papers | NEET UG Physics Mock Test 6

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This mock test of NEET UG Physics Mock Test 6 for NEET helps you for every NEET entrance exam. This contains 45 Multiple Choice Questions for NEET NEET UG Physics Mock Test 6 (mcq) to study with solutions a complete question bank. The solved questions answers in this NEET UG Physics Mock Test 6 quiz give you a good mix of easy questions and tough questions. NEET students definitely take this NEET UG Physics Mock Test 6 exercise for a better result in the exam. You can find other NEET UG Physics Mock Test 6 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:

Since the spring is massless, no force will be exerted on the smaller mass.
Its velocity will be zero.
The velocity gained by the centre of mass - QUESTION: 4

If the body is moving in a circle of radius r with a constant speed υ, its angular velocity is

Solution:
QUESTION: 5
A choke coil has
Solution:
QUESTION: 6

For a coil having L=2 mH, current flows at the rate of 10⁻3 ampere/sec. The emf induced is

Solution:
QUESTION: 7

The resistance of a coil is 4.2 Ω at 100oC and the temperature coefficient of resistance of its material is 0.004/oC. Its resistance at 0oC is

Solution:
QUESTION: 8

The curve drawn between velocity and frequency of photon in vacuum will be a

Solution:
QUESTION: 9
Bullets of 0.03Kg mass each hit a plate at the rate of 200 bullets per second with a velocity of 50 ms-1 and reflect back with a velocity of 30 ms-1. The average force acting on the plate in newton is
Solution:
QUESTION: 10
A 80 μF capacitor in a defibrillator is charged to 100 V. The energy stored in the capacitor is sent through the patient during a pulse of duration 2 ms. The power delivered to the patient is
Solution:
QUESTION: 11

Two insulated matallic spheres of 3 μ F and 5 μ F are charged to 300V and 500V respectively. The energy loss when they are connected by a wires is...

Solution:
QUESTION: 12

A wire of radius r has resistance R. If it is stretched to a radius of 3r/4, its resistance becomes

Solution:

Let L1 be the length and A1 the area of crosssection of the original wire and L2, A2 be their values of the stretched wire
Since volume of the wire remains unchanged, we have QUESTION: 13
It is easier to roll a barrel than pull it along the road. This statement is
Solution:
QUESTION: 14
If mass of a body is M on the earth surface, then the mass of the same body on the moon surface is
Solution: Its M....because mass is independent of gravity.so, it doesn't changes......whereas weight (W=mg)... depends on gravity......
QUESTION: 15
The centripetal force acting on a satellite orbiting round the earth and the gravitational force of earth acting on the satellite both equal F. The net force on the satellite is
Solution:
QUESTION: 16
A perfect black body is one whose
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QUESTION: 17

Air is filled at 60oC in a vessel of open mouth. The vessel is heated to a temperature T so that 1/4th part of air escapes. Assuming the volume of the vessel remaining constant, the value of T is

Solution:
QUESTION: 18

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 10-19C, mp = 1.67 x 10-27 kg)

Solution: QUESTION: 19
A galvanometer has a resistance of 25 Ω and a maximum of 0.01 A current can be passed through it. In order to change it into an ammeter of range 10 A, the shunt resistance required is
Solution:
QUESTION: 20

A magnetic needle suspended by a silk thread is vibrating in the earth's magnetic field. If the temperature of the needle is increased by 700oC, then

Solution: Since magnatic moment decreases with increase in temperature hence time period T increases.

QUESTION: 21
The velocity of efflux of an ideal liquid depend upon
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QUESTION: 22
Which of the following affets the elasticity of a substance?
Solution:
QUESTION: 23

The M.I. of a rectangular lamina perpendicular about its centre of mass is

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QUESTION: 24
A car accelerated from initial position and then returned at initial point, then
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QUESTION: 25
What is the value of linear velocity, if ω̅ = 3ι̂ − 4ĵ + k̂ and r̅ = 5ι̂ − 6ĵ + 6k̂
Solution:
QUESTION: 26

A particle of mass m is projected with velocity υ making an angle of 45o with the horizontal. The magnitude of the angular momentum of the particle about the point of projection when the particle is at its maximum height is (where g = acceleration due to gravity)

Solution:
QUESTION: 27
A machine gun is mounted on a 2000 kg car on a horizontal frictionless surface. At some instant the gun fires bullets of mass 10 gm with a velocity of 500 m/sec with respect to the car. The number of bullets fired per second is ten. The average thrust on the system is
Solution:
QUESTION: 28
In a camera, the time of exposure for good quality prints depends upon
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QUESTION: 29
A mass m is vertically suspended from a spring of negligible mass. The system oscillates with a frequency n. What will be the frequency of the system, if a mass 4m is suspended from the same spring ?
Solution:
QUESTION: 30

A particle of mass m is projected with velocity υ making an angle of 45o with the horizontal. The magnitude of the angular momentum of the particle about the point of projection when the particle is at its maximum height is (where g = acceleration due to gravity)

Solution:
QUESTION: 31
The distance between eye lens and cross wire in Ramsden eye piece which has a field lens of focal length 1.2 cm is .......cm.
Solution:
QUESTION: 32

If 'I' is moment of inertia of a body and 'ω' is its angular velocity, then its rotational kinetic energy is directly proportional to

Solution:
QUESTION: 33
Distances of stars are measured in
Solution:
QUESTION: 34

A spherical drop of oil of radius 1 cm is broken into 1000 droplets of equal radii. If the surface tension of oil is 50 dynes/cm, the work done is

Solution: QUESTION: 35

When an electric current flows in a conductor, its temperature

Solution:
QUESTION: 36
If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be
Solution:
QUESTION: 37
The minimum number of non-zero non-collinear vectors required to produce a zero vector is
Solution:
QUESTION: 38
When an ideal diatomic gas is heated at constant pressure, the fraction of the heat energy supplied which increases the internal energy of the gas, is
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QUESTION: 39
The dimensional formula ML2T-2 represents
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QUESTION: 40

The dimensions of inter atomic force constant are

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QUESTION: 41
The maximum intensity in interference pattern is how many times the intensity due to each slit?
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QUESTION: 42
With the propogation of a longitudinal wave through a material medium, which of the following quantity is transmitted in the direction of its propogation?
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QUESTION: 43
If a spring of force constant k is cut into two equal parts, the ratio of works done in stretching the springs through the same distance will be
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QUESTION: 44
An inelastic ball is dropped a height of 100 m. Due to various reasons, it loses 15% of its energy. To what height will the ball rebound?
Solution:
QUESTION: 45
Two rods of equal length and diameter have thermal conductivities 3 and 4 units respectively. If they are joined in series, the thermal conductivity of the combination would be
Solution: