CBSE - Sound and Wave

In air the speed of sound is 340 m/s. This means that in one second : (1) Sound source moves 340 m (2) Listener moves 340 m (3) Air disturbance moves 340 m (4) Air moves 340 m

Earthquake waves are of which type? (1) Infrasonic (2) Ultrasonic (3) Supersonic (4) Intrasonic

A man can hear a sound of frequency (1) 1Hz (2) 1000 Hz (3) 200 KHz (4) 5 MHz

Ice is floating on water in a beaker when ice completely melts then level of water in beaker : (1) Increases (2) Decreases (3) Remains the same (4) First increases then decreases

A stone is dropped into a well 44.1 m deep. The sound of splash is heard 0.13 seconds after the stone hits the water. What should be the velocity of sound in air? (1) 319 m/s (2) 339 m/s (3) 359 m/s (4) 369 m/s