HSC Science (Electronics) 12th Standard Board Exam - Maharashtra State Board Important Questions for Physics

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?

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

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?

Which of the following cannot produce two coherent sources?

A Plane Wavefront of light of wavelength 5500 A.U. is incident on two slits in a screen perpendicular to the direction of light rays. If the total separation of 10 bright fringes on a screen 2 m away is 2 cm. Find the distance between the slits.

Describe Young’s double-slit experiment with a neat diagram showing points of maximum and minimum intensity. 

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

Explain analytically how the stationary waves are formed

Show that all harmonics are present on a stretched string between two rigid supports.

Differentiate between free and forced vibrations.

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