Waves · Physics · WB JEE

The equation of a progressive wave can be given by $$y = 15\sin (660\pi t - 0.02\pi x)$$ cm. The frequency of the wave is

A hollow cylinder with both sides open generates a frequency f in air. When the cylinder vertically immersed into water by half its length the frequen...

Two stretched strings have lengths l and 2l while tensions are T and 4T respectively. If they are made of same material the ratio of their frequency i...

When sound is produced in an aeroplane with a velocity of 200 m/s horizontally its echo is heard after $$10\sqrt 5 $$ seconds. If velocity of sound in...

Two turning forks of frequencies n1 and n2 produces n beats per second. If n2 and n are known, n1 may be given by...

A car moving with a velocity of 36 km/hr crosses a siren of frequency 500 Hz. The apparent frequency of siren after passing it will be

Longitudinal waves cannot

The displacement of a plane progressive wave in a medium, travelling towards positive x-axis with velocity 4 m/s at t = 0 is given by $$y = 3\sin 2\pi...

The velocity of sound in air at 20$$^\circ$$C and 1 atm pressure is 344.2 m/s. At 40$$^\circ$$C and 2 atm pressure, the velocity of sound in air is ap...

For air at room temperature, the atmospheric pressure is 1.0 $$ \times $$ 105 Nm$$-$$2 and density of air is 1.2 kgm$$-$$3. For a tube of length 1.0 m...

The intensity of a sound appears to an observer to be periodic. Which of the following can be the cause of it?