HSC Science (General) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions for Physics

The radius of the first Bohr orbit in the hydrogen atom is 0.5315 Å. The radius of the second Bohr orbit in the hydrogen atom is ______.

Which of the following materials is diathermanous?

Which one of the following is not a characteristics of SHM?

A ray of light passes from air to glass. If the angle of incidence is 74° and the angle of refraction is 37°, find the refractive index of the glass.

A particle executing SHM has velocities v₁ and v₂ when it is at distance x₁ and x₂ from the centre of the path. Show that the time period is given by `T=2pisqrt((x_2^2-x_1^2)/(v_1^2-v_2^2))`

On what factors does radius of gyration depend?

On what factors radius of gyration does not depend?

Can you locate some similarity between the centre of mass and radius of gyration?

What can you infer if a uniform ring and a uniform disc have the same radius of gyration?

The self-inductance of a closely wound coil of 200 turns is 10 mH. Determine the value of magnetic flux through the cross-section of the coil when the current passing through the coil is 4 mA.

Show that the average energy per molecule is directly proportional to the absolute temperature ‘T’ of the gas.

2000 calories of radiant heat is incident on a body. If the body absorbs 550 calories of heat, find the coefficient of emmission of the body.

What is a transformer?

Phase difference between a node and an adjacent antinode in a stationary wave is ______.

Derive the equation for a transformer.

An aircraft of wing span of 60 m flies horizontally in earth’s magnetic field of  6 × 10⁻⁵ T at a speed of 500 m/s. Calculate the e.m.f. induced between the tips of the wings of the aircraft.

Two springs of force constants K₁ and K₂ (K₁> K₂) are stretched by same force. If W₁ and W₂ be the work done stretching the springs then......

For polyatomic molecules having 'f' vibrational modes, the ratio of two specific heats,Cp/Cv  is..........