What are beats?Show analytically how they are produced due to superposition of two sound waves.

Show analytically how stationary wave are they formed due to superposition of two waves.

What are Cathod rays? How they are produced .

State the principle of superposition of waves. Mentiona phenomenon that occurs due to superposition of two waves.

How are carrier wave produced?

Give two practical applications of reflection of sound waves.

What is sound and how is it produced?

What are wavelength, frequency, time period and amplitudes of a sound wave?

What are radio wave? How they propagate?

The equations of light wave from two sources are y_1=a_1sinomegat and y_2=a_2sin(omegat+phi) where the symbols have their usual meaning. The individual intesities are I_1 and I_2 . Show that the minimum resultant intesity due to superposition is I_(min)=I_1+I_2-2sqrt(I_1I_2) .