NEET (UG) entrance exam Question Bank Solutions for Physics

A thin mica sheet of thickness 2 × 10^-6 m and refractive index (µ = 1.5) is introduced in the path of the first wave. The wavelength of the wave used is 5000 Å. The central bright maximum will shift ______.

A small block slides down on a smooth inclined plane, starting from rest at time t = 0. Let S_n be the distance travelled by the block in the interval t = n − 1 to t = n. Then, the ratio `("S"_"n")/("S"_("n" + 1))` is ______.

Two conducting circular loops of radii R₁ and R₂ are placed in the same plane with their centres coinciding. If R₁ > > R₂, the mutual inductance M between them will be directly proportional to ______.

A small block slides down on a smooth inclined plane, starting from rest at time t = 0. Let S_n be the distance travelled by the block in the interval t = n − 1 to t = n. Then, the ratio `"S"_"n"/"S"_("n" + 1)` is ______

Two conducting circular loops of radii R₁ and R₂ are placed in the same plane with their centres coinciding. If R₁ >> R₂, the mutual inductance M between them will be directly proportional to ______.

A particle shows distance-time curve as shown in the figure. The maximum instantaneous velocity of the particle is around the point

A metal plate measuring 1 cm × 20 cm × 40 cm is embedded with a side of 20 cm × 1 cm into a wall at one end and is pulled by a force 1.6 × 10⁶ N parallel to the 1 cm side at the other end. The angle through which the plate is turned is (11 = 40 × 10⁹ Pa). 

Clouds float in the air due to ______.

A heavy uniform chain lies on a horizontal table. If the coefficient of friction between the chain and the table is 0.25, then the maximum fraction of the length of the chain that can hang over one edge of the table is

A quarter horse power motor runs at a speed of 600 r.p.m. Assuming 40% efficiency, the work done by the motor in one rotation will be

A transistor is

Three bodies of the same material and having masses of m, m and 3m are at temperatures of 40°C, 50°C and 60°C respectively. If the bodies are brought in thermal contact, the final temperature will be:  

Heat engine transfers ______. 

A uniform metal chain is placed on a rough table such that one end of the chain hangs down over the edge of the table. When two-thirds of its chain length hangs over the edge the chain start sliding. Then the coefficient of static friction is:

An engine develops 20 kW power. How much time will it take to lift a mass of 200 kg to a height of 50 m? (g = 10 m/s²)

The earth's magnetic field at a certain place has a horizontal component 0.3 gauss and the total strength 0.5 gauss. The angle of dip is ______.

The primary winding of a transformer has 100 turns and its secondary winding has 200 turns. The primary is connected to an a.c supply of 120 V and the current flowing in its is 10 A. The voltage and the current in the secondary are ______.

The internal resistance of a cell is the resistance of ______

A 8 cm cube has its upper face displaced by 0.5 mm by a tangential force of 10 kN. What is the shear modulus of the cube?

The angle between the magnetic meridian and geographical meridian is called ______