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

A ray of light travelling through rarer medium is incident at very small angle i on a glass slab and after refraction its velocity is reduced by 20%. The angle of deviation is ______.

In a thermodynamic system, W represents the work done by the system and ΔU is the increase in internal energy. Which of the following statements is true?

Two infinitely long parallel conducting plates having surface charge densities +σ cand -σ respectively are separated by a small distance. The medium between the plates is a vacuum. If ε₀ is the dielectric permittivity of the vacuum, then the electric field in the region between the plates is ______.

Which of the following statements is correct regarding the angle of contact θ_c of a liquid drop with a flat solid surface?

In an adiabatic expansion, a gas does 25 J of work, while in an adiabatic compression 100 J of work is done on a gas. The change of internal energy in the two processes respectively, are ______.

The separation between the plates of the parallel plate capacitor is d and the area of each plate is A. When a slab of material of dielectric constant k and thickness t(t < d) is introduced between the plates, its capacitance becomes ______.

(ε₀ = permittivity of free space)

The equivalent capacitance between the point A and B as shown in figure will be ______.

Calculate the work done (W_AB ) by the gas, if 5 moles of an ideal gas is carried by a quasi state isothermal process at 500 K to twice its volume ______.

540 g of ice at 0°C is mixed with 540 g of water at 80°C. The final temperature of the mixture will be ______.

If in an adiabatic process, the pressure is increased by 2/3%, then the volume decreases by ______.

`("Assume", "C"_"p"/"C"_"v"=3/2)`

A cycle tyre bursts suddenly, this represents an ______.

The ratio of energy required to raise a satellite of mass 'm' to a height 'h' above the earth's surface of that required to put it into the orbit at same height is ______.

[R = radius of the earth]

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

Two satellites of a planet have periods of 32 days and 256 days. If the radius of the orbit of the former is R, the orbital radius of the Latter is ______

Which of the following statements is CORRECT in respect of a geostationary satellite?

The kinetic energy of a revolving satellite (mass m) at a height equal to thrice the radius of the earth (R) is ______.

The graph between surface tension and temperature T is

The radius of the earth and the radius of orbit around the sun are 6371 km and 149 x 10⁶ km respectively. The order of magnitude of the diameter of the orbit is greater than that of earth by ______.

There is no atmosphere on moon because ____________.

The radius of gyration of a homogeneous body is independent of ______.