HSC Science (Electronics) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions for Physics

Explain why the inductance of two coils connected in parallel is less than the inductance of either coil.

Derive an expression for the difference in tensions at the highest and lowest point for a particle performing the vertical circular motion. 

Find the kinetic energy of 3 litre of gas at S.T.P given standard pressure is 1.013 × 10⁵ N/m². 

Determine the pressure of nitrogen at 0°C if the density of nitrogen at N.T.P. is 1.25 kg/m³ and R.M.S. speed of the molecules at N.T.P. is 489 m/s.  

What does the phase of π/2 indicate in linear S.H.M.? 

Define linear S.H.M.

In the law of tension, the fundamental frequency of the vibrating string is, ______   

State law of tension.

State law of linear density.

What is the resonance?

How the frequency of the vibrating wire is affected if the load is fully immersed in water? 

A sonometer wire of length 1 m is stretched by a weight of 10 kg. The fundamental frequency of vibration is 100 Hz. Determine the linear density of the material of the wire.

Waves produced by two vibrators in a medium have wavelength 2 m and 2.1 m respectively. When sounded together they produce 8 beats/second. Calculate wave velocity and frequencies of the vibrators.

State and verify the laws of vibrating strings using a sonometer. 

If an electron is brought towards another electron, the electric potential energy of the system ______.

Which physical quantity has its unit as J/C? Is it a scalar or vector?

Find the electric potential at the surface of an atomic nucleus (Z = 50) of radius 9 × 10^-13 cm.  

Three-point charges +q, +2q and Q are placed at the three vertices of an equilateral triangle. Find the value of charge Q (in terms of q), so that the electric potential energy of the system is zero. 

Obtain an expression for the potential energy of a dipole in an external field.

Derive an expression for the electric potential due to an electric dipole.