AIIMS Full Mock Test - 5 - NEET MCQ

A rifle bullet loses 1/20th of its velocity in passing through a plank. The least number of such planks required just to stop the bullet is

At what temperature, the resistance of a copper wire will become three times its value at 0ºC ? (Temperature coefficient of resistance for copper = 4 x 10⁻³per ºC)

Photon of 5.5eV energy fall on the surface of the metal emitting photoelectrons of maximum kinetic energy 4.0eV. The stopping voltage required for these electrons are

Choke coil works on the principle of

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

In photoelectric emission the number of electrons ejected per second

Which of the following statements is correct ?

Quantum theory of light gives concept of

A 100 mH coil carries a current of 10 A. The magnetic energy stored in the coil is

In an oscillating LC circuit the maximum charge on the capacitor is Q. The charge on the capacitor when the energy is stored equally between the electric and magnetic fields is

Maxwell's equation describe the fundamental laws of

If the unit of force and length be each increased by four times, then the unit of energy is increased by

If a positive charge is shifted from a low potential region to a high potential region, then the electric potential energy of the system

A particle of charge -q and mass m moves in a circle of radius r around an infinitely long line charge of linear charge density + λ . Then time period will be:(Where

The enegy stored in wound watch spring is

One feels hotter at the top of a flame than the sides because of

If t₁ and t₂ are time taken by two different coils for producing same heat with same supply, then the time taken by them to produce the same heat when connected in parallel will be

Time period of oscillation of a magnet is 2 sec. When it is remagnetised so that its pole strength is 4 times, its period will be

Magnetic dipole moment is a vector quantity directed from

A wire of length L and radius a rigidly fixed at one end. On stretching the other end of the wire with a force F, the increase in it length is l. If another wire of same material but of length 2L and radius 2a is stretched with a force 2F, the increase in its length will be

The radioisotope, tritium (³H₁) has a half-life of 12.3 years. If the initial amount of tritium is 32 mg, how many miligrams of it would remain after 49.2 years ?

A light spring balance hangs from the hook of the other light spring balance and a block of mass M kg hangs from the former one. Then the true statement about the scale reading is

A hollow sphere is filled with water through a small hole in it. It is hung by a long thread and made to oscillate. As the water slowly flows out of the hole at the bottom, the period of oscillation will

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Any internal forces in the system are included while considering force for Newton's second law of motion.
Reason(R): The force in the law stands for the net force on the system.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Sound produced in air is not heard by a person deep inside water .
Reason(R): Most of the sound is refracted from air to water and very less is reflected .

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Decay of radioactive substance is rapid in the beginning.
Reason(R): At any instant the rate of decay of radioactive is proportional to the number of atoms present at that instant.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): All processes in which pressure and volume are proportional, take place at constant temperature.
Reason(R): Work done in a thermodynamical process is path dependent.