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AFMC Physics Mock Test - 4 - NEET MCQ


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30 Questions MCQ Test AFMC Mock Test Series 2025 - AFMC Physics Mock Test - 4

AFMC Physics Mock Test - 4 for NEET 2024 is part of AFMC Mock Test Series 2025 preparation. The AFMC Physics Mock Test - 4 questions and answers have been prepared according to the NEET exam syllabus.The AFMC Physics Mock Test - 4 MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for AFMC Physics Mock Test - 4 below.
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AFMC Physics Mock Test - 4 - Question 1

The large scale destruction, that would be caused due to the use of 50 kg of U-235, is called

AFMC Physics Mock Test - 4 - Question 2

A nuclear bomb exploded 200 km above the surface of moon. The sound of explosion on the moon

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AFMC Physics Mock Test - 4 - Question 3

A dry cell has an e.m.f. of 1.5 V and an internal resistance of 0.05 Ω. The maximum current obtainable from this cell for a very short time interval is

AFMC Physics Mock Test - 4 - Question 4

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

AFMC Physics Mock Test - 4 - Question 5

The Lenz's law gives

AFMC Physics Mock Test - 4 - Question 6

A parallel plate capacitor is made by stacking n equally spaced plates connected alternatively. If capacitance between any two adjacent plates is C, then the resultant capacitance is

AFMC Physics Mock Test - 4 - Question 7

The mass of a particle is 400 times than that of an electron and the charge is double. The particle is accelerated by 5 V. Initially the particle remained in rest, then its final kinetic energy will be

Detailed Solution for AFMC Physics Mock Test - 4 - Question 7

Answer :

B

Solution :

ΔE=2e×5V=10eV

⇒ Final kinetic energy =10eV

AFMC Physics Mock Test - 4 - Question 8

Photoelectric effect proves the

AFMC Physics Mock Test - 4 - Question 9

A 220 V, 1000 watt bulb is connected across a 110 V mains supply. The power consumed will be

AFMC Physics Mock Test - 4 - Question 10

The average power dissipation in a pure capacitor in AC circuit is

AFMC Physics Mock Test - 4 - Question 11

There is an electric field E in x-direction. If the work done on moving a charge of 0.2C through a distance of 2m, along a line making an angle 60° with x-axis is 4 J, then what is the value of E?

AFMC Physics Mock Test - 4 - Question 12

A rocket can go vertically upwards in earth's atmosphere because

AFMC Physics Mock Test - 4 - Question 13

Two capacitors of capacity 4 μF and 6 μF are connected in series and a battery is connected to the combination the energy stored is E1. If they are connected in parallel and if the same battery is connected to this combination the energy stored is E2. The ratio of E1 and E2 is

Detailed Solution for AFMC Physics Mock Test - 4 - Question 13

As the capacitors are connected in series

As the capacitors are connected in parallel

AFMC Physics Mock Test - 4 - Question 14

A wagon weighing 1000 kg is moving with velocity of 50 km/h on smooth horizontal rails. A mass of 250 kg is deopped into it. The velocity with which it moves now is

AFMC Physics Mock Test - 4 - Question 15

The root mean square velocity of the gas molecules is

AFMC Physics Mock Test - 4 - Question 16

At a given temperature the root mean square velocities of oxygen and hydrogen moleucles are in the ratio

AFMC Physics Mock Test - 4 - Question 17

A glof ball of mass 0.05 kg placed on a tee, is struck by a golf club. The speed of the golf ball as it leaves the tee is 100 m/s, the time of contact between them is 0.02 s. If the force decreases to zero linearly with time, then the force at the beginning of the contact is

AFMC Physics Mock Test - 4 - Question 18

A current of 2 ampere flows in a long, straight wire of radius 2 mm. The intensity of magnetic field at the axis of the wire is 

AFMC Physics Mock Test - 4 - Question 19

A spherical black body with a radius of 12 cm radiates 450 W power at 500 K. If the radius were halved and the temperature doubled, the power radiated in wattt would be

Detailed Solution for AFMC Physics Mock Test - 4 - Question 19

Power radiated P = σ AT4 = a (4πr2). T

⇒ P2 = 450 x 4 = 1800 W

AFMC Physics Mock Test - 4 - Question 20

The rate of flow of water in a capillary tube of length 'l' and radius 'r' is 'V'. The rate of flow in another capillary tube of length '2l' and radius '2r' for same pressure difference would be

AFMC Physics Mock Test - 4 - Question 21

The velocity of efflux of an ideal liquid depend upon

AFMC Physics Mock Test - 4 - Question 22

Two spheres of equal masses but radii r1 and r2 are allowed to fall in a liquid of infinite column. The ratio of their terminal velocities are

AFMC Physics Mock Test - 4 - Question 23

A wooden cube is floating water with a body of mass 200 g placed on it. When the body is removed, the cube rises 2 cm above the water level. The side of the cube is

AFMC Physics Mock Test - 4 - Question 24

Two wires of same radius and length are subjected to the same load. One wire is of steel and the other is of copper. If Young's modulus of steel is twice that of copper, then ratio of elastic potential energies stored per unit volume in steel wire to that in copper wire is

AFMC Physics Mock Test - 4 - Question 25

The extension in a string, obeying the Hooke's law, is x. The speed of sound in the stretched string is v. If the string is extended to 1.5 x, then speed of sound will be

Detailed Solution for AFMC Physics Mock Test - 4 - Question 25

Speed of sound in a stretched string 
Where T is the tension in the string and μ is mass per unit length
According to Hooke's law, F ∝ x

AFMC Physics Mock Test - 4 - Question 26

A car travels first half distance between two places with a speed of 30 km/h and remaining half with a speed of 50 km/h. The average speed of the car is

AFMC Physics Mock Test - 4 - Question 27

A stone of mass of 16 kg is attached to a string 144 m long and is whirled in a horizontal circle. The maximum tension the string can withstand is 16 Newton. The maximum velocity of revolution that can be given to the stone without breaking it, will be

AFMC Physics Mock Test - 4 - Question 28

Two white dots are 1 mm apart on a black paper. They are viewed by eye of pupil diameter 3 mm. Approximately, what is the maximum distance at which these dots can be resolved by the eye? (Take wavelength of light = 500 nm)

AFMC Physics Mock Test - 4 - Question 29

Which one of the following is ture for a small iron ball when placed just at the centre of the horizontal pole pieces of a strong electromagnet and then released ?

AFMC Physics Mock Test - 4 - Question 30

An object is placed at a distance of 40 cm in front of a concave mirror of focal length 20 cm. The nature of image is

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