# Waves · Physics · WB JEE

Start Practice## MCQ (Single Correct Answer)

WB JEE 2008

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

WB JEE 2008

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...

WB JEE 2008

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...

WB JEE 2008

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...

WB JEE 2008

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

WB JEE 2008

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

WB JEE 2024

Longitudinal waves cannot

WB JEE 2023

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...

## MCQ (More than One Correct Answer)

WB JEE 2018

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