AIIMS Full Mock Test 15 - NEET MCQ

A 5 Kg body moving at 10 ms^-1 strikes a 20Kg body at rest. The collision is inelastic and the 5Kg body comes to rest and the 20Kg body is set into motion. The velocity of the second body is

A student measures the terminal potential difference (V) of a cell (of emf E and internal resistance r) as a function of the current (I) flowing through it. The slope, and intercept, of the graph between V and I, then, respectively, equal:

What will happen to de-Broglie's wavelength if the velocity of electron is increased ?

Cathode rays consist of

A positron and a proton are accelerated by the same accelerating potential. Then the ratio of the associated wavelengths of positron and proton will be [M = mass of proton; m = mass of positron]

In Millikan's experiment, an oil drop having charge q gets stationary on applying a potential differnce V in between two plates separated by a distance 'd'. The weight of the drop is

The working of a dynamo is based on principle of

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

The unit of inductance is equivalent to

The pressure exerted by an electromegnetic wave of intensity I on a non-reflecting surface is (where c = Velocity of light)

A coil of inductances 300mH and resistance 2 Ω is connected to a source of voltage 2V. The current reaches half of its steady state value in

The energy stored in a capacitor is actually stored

A fully charged capacitor has a capacitance (C). It is discharged through a small coil of resistance wire embedded in thermally insulated block of specific heat capacity (s) and mass (m). If temperature of the block is raised by ΔT, the potential difference (V) across the capacitor is

Two bodies of mass m₁ and m₂ have equal kinetic energies. If p₁ and p₂ are their respective momentum, then ratio p₁ : p₂ is equal to

If g is the acceleration due to gravity on the earth's surface, the gain in the potential energy of an object of mass m raised from the surface of earth to a height equal to the radius of the earth R, is

If two bulbs of wattage 25 and 30 W, each rated at 220 volts are connected in series with a 440 volt supply, which bulb will fuse?

A black body is heated from 27ºC to 927ºC. The ratio of energies radiated will be

If a substance is to be paramagnetic, its atoms must have a

The magnetic susceptibility does not depend upon the temperature in

Which of the following affets the elasticity of a substance?

Consider the following statements Assertion (A) : A rocket moves forward by pushing the surrounding air backwards. Reason (R) : It derives the necessary thrust to move forward, according to Newton's third law of motion. Of these statements

Which of the following are the end products of uranium and actinium series?

Displacement between maximum potential energy position and maximum kinetic energy position for a particle executing simple harmonic motion is

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): Corpuscular theory fails in explaining the velocities of light in air and water.
Reason (R): According to corpuscular theory light should travel faster in denser media than in rarer media.

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): Due to opposition offered by self-inductance, work is done by external agent in establishing current in circuit. This work done is stored as potential energy.
Reason(R): Self-inductance of a coil depends on the geometry of coils and medium.

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): In series LCR circuit, the resonance is equal and opposite to the capacitive reactance.
Reason (R): At resonance the inductive reactance is equal and opposite to the capacitive reactance.

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): A uniform solid cylinder rolling with angular velocity ω along a plane surface strikes a vertical rigid wall. Angular velocity of cylinder when it begins to roll up a wall is less than the initial Angular velocity (ω).
Reason(R): After striking the vertical wall angular velocity increases.