Waves Test - 18...

A stationary wave is the sum of 

A closed organ pipe is excited to produce the third overtone of the air column.Then it will have,

Wave motion happens due to 

Which of the following is different from others?

In stationary waves, nodes are the points where there is:

The figure shows a surface $$XY$$ separating two transparent media, medium - $$1$$ and medium - $$2$$. The lines $$ab$$ and $$cd$$ represent wavefronts of a light wave travelling in medium - $$1$$ and incident on $$XY$$. The lines $$ef$$ and $$gh$$ represents wavefronts of the light wave in medium - $$2$$ after refraction.
Light travels as a:

A particle is executing SHM with an amplitude 4 cm. What time does it take to reach the distance equal to amplitude, if the particle starts from rest at t = 0 from the mean position

Which of the following waves does not travel in vacuum?

Which of the following waves is udsed in sonography?

Two identical sinusoidal waves each of amplitude $$10 mm$$ with a phase difference of $$90^o$$ are travelling in the same direction in string. The amplitude of the resultant wave is :