HSC Science (General) १२ वीं कक्षा - Maharashtra State Board Important Questions for Physics

What is a thermodynamic process?

Explain the cyclic process. 

3 mole of a gas at temperature 400 K expands isothermally from an initial volume of 4 litres to a final volume of 8 litres. Find the work done by the gas. (R = 8.31 J mol^-1 K^-1)  

Explain the thermodynamics of the isobaric process.  

The first law of thermodynamics is concerned with the conservation of ______.

Discuss the behaviour of wire under increasing load.

A particle is performing simple harmonic motion with amplitude A and angular velocity ω. The ratio of maximum velocity to maximum acceleration is ______.

Differentiate between free and forced vibrations.

Discuss different modes of vibrations in an air column of a pipe open at both the ends.

Define surface tension 

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

The integral multiple of fundamental frequencies are ______ 

What are harmonics? 

What are stationary waves? Why are they called stationary waves? 

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.

Which property of light does not change when it travels from one medium to another?

Derive the laws of reflection of light using Huygens’ principle.

In Fraunhoffer diffraction by a narrow slit, a screen is placed at a distance of 2 m from the lens to obtain the diffraction pattern. If the slit width is 0.2 mm and the first minimum is 5 mm on either side of the central maximum, find the wavelength of light.

White light consists of wavelengths from 400 nm to 700 nm. What will be the wavelength range seen when white light is passed through a glass of refractive index 1.55?