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

An ideal gas of volume 2 L is adiabatically compressed to (1/10)^th of its initial volume. Its initial pressure is 1.01 x 105 Pa, calculate the final pressure. (Given 𝛾 = 1.4) 

Write a note on thermodynamic equilibrium.

Explain graphically (i) positive work with varying pressure, (ii) negative work with varying pressure, and (iii) positive work at constant pressure. 

Write a note on free expansion.

Explain work done during a thermodynamic process.

Explain the thermodynamics of the isobaric process.  

Explain the thermodynamics of the isochoric process.  

Explain thermodynamics of the adiabatic process.  

The equation of a simple harmonic progressive wave is given by, y = 5cosπ`[200t - x/150]`, where x and y are in cm and ‘t’ is in second. Then the velocity of the wave is ______.

The integral multiple of fundamental frequencies are ______ 

What are beats?

What are harmonics? 

What are overtones?

A violin string vibrates with the fundamental frequency of 510 Hz. What is the frequency of the first overtone? 

Distinguish between an overtone and harmonic. 

State any four applications of beats.

The equation of simple harmonic progressive wave is, y = sin π/2 (4t/0.025 – x/0.25). Where all quantities are in the S.I. system. Find the amplitude, frequency, wavelength, and velocity of the wave.

Explain the production of beats and deduce analytically the expression for beats frequency.

What happens to the energy stored in a capacitor, if the plates of a charged capacitor are drawn apart, the battery remaining connected?

Two spheres A and B of radius a and b respectively are at the same potential. Find the ratio of the surface charge densities of A and B.