MAH-MHT CET (PCM/PCB) entrance exam Question Bank Solutions for Physics

In the given figure, a = 15 m/s² represents the total acceleration of a particle moving in the clockwise direction on a circle of radius R = 2.5 m at a given instant of time. The speed of the particle is ______.

Water rises in a capillary tube of radius r upto a height h. The mass of water in a capillary is m. The mass of water that will rise in a capillary of radius `"r"/4` will be ______.

The surface tension of the two liquids is respectively 20 and 60 dyne cm^-1. The liquids drop from the ends of two tubes of the same radius. The ratio of the weights of the two drops is ______

Two wires of different materials have same length L and same diameter d. The second wire is connected at the end of the first wire and forms one single wire of double the length. This wire is subjected to stretching force F to produce the elongation l. The two wires have ______.

When wavelength of light used in optic I instruments A and Bare 4500 Å and 6000 Å respectively, the ratio of resolving pow of A to B will be ______.

The ratio of radii of gyration of a ring to a disc (both circular) of same radii and mass, about a tangential axis perpendicular to the plane is

Refractive index of the medium isµ and wavelength is λ, then which of the following proportionality relation is correct?

Two parallel SHMs have equations y₁ = a₁ sin(ωt + 2π) and y₂ = a₂ sin(ωt + 4π). The amplitude of the resultant is ______

A square frame of each side L is dipped in a soap solution and taken out. The force acting on the film formed is _____.
(T = surface tension of soap solution).

In a p-type semiconductor, the acceptor impurity produces an energy level ______

The number of molecules in 100 cc of gas at N.T.P. is ______ if the mass of each molecule is 4.556 x 10^-25 kg and R.M.S. speed is 250 m/s. 

In amplitude modulation,

Two small drops of mercury each of radius 'R' coalesce to form a large single drop. The ratio of the total surface energies before and after the change is ____________.

The velocity of light in glass is 2 x 10⁸ m/s. If the refractive index of glass with respect to water is 9/8, then the velocity of light in water is ______

The molecular weights of oxygen and hydrogen are 32 and 2 respectively. The root mean square velocities of oxygen and hydrogen at N.T.P. are in the ratio ______

When a simple harmonic progressive wave is travelling through a medium, then each succeeding particle ______

Two spherical rain drops reach the surface of the earth with terminal velocities having ratio 16 : 9. The ratio of their surface area is ______.

The total energy of the body executing S.H.M. is E. The kinetic energy of the body, when the displacement is half of the amplitude is ______.

The root mean square velocity of molecules of a gas is 200 m/s. What will be the root mean square velocity of the molecules, if the molecular weight is doubled and the absolute temperature is halved?

Water rises upto a height h in a capillary tube on the surface of the earth. The value of h will increase, if the experimental setup is kept in [g = acceleration due to gravity]