HSC Science (Electronics) इयत्ता १२ वी - Maharashtra State Board Important Questions

Draw a p-V diagram and explain the concept of positive and negative work. Give one example each.

Heating a gas in a constant volume container is an example of which process?

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.  

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

Define second’s pendulum.

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? 

Distinguish between an overtone and harmonic. 

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.

Prove that the frequency of beats is equal to the difference between the frequencies of the two sound notes giving rise to beats.

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