A sitar player plucks the wire of a sitar.After a short time each part of the wire starts vibrating in a direction perpendicular to the wire.Is the propogation of this disturbance a longitudinal or a transverse wave?
Longitudinal
Transverse
Stationary
Both longitudinal and transvers
A sound wave has a frequency of 1000 Hz and a wave length of 34 cm.How long will it take to travel 1 km?
3.20 s
2.94 s
5.94 s
3.10 s
Sound propagates through
Solid
Liquid
Gas
All the above
Longitudinal waves cannot travel through
vacuum
solids
liquids
gases
Delhi Radio Station transmits musical programmes at 219 m wavelength and 1300 Hz frequency.Calculate the velocity of radio waves.
2.847 x 10-5
3.148 x 105
2.847 x 105
3.84 x 10-5
The bob of a pendulum moves from the mean position to an extreme position in 0.28 seconds.Then the time period of the pendulum is
2.24 seconds
1.12 seconds
0.84 seconds
3.84 seconds
The speed of the bob of an oscillating pendulum is zero
at the mean position
at an extreme position
between the mean position and the left extreme
between the mean position and the right extreme
A simple pendulum has a metal bob which is negatively charged.If it is allowed to oscillate above a positively charged metallic plate then its time period will
increase
decrease
remain the same
become zero
A pendulum vibrates with a time period of 1 second.The sound produced by it is
supersonic
audible
infrasonic
ultrasonic
In SONAR we use
ultrasonic waves
infrasonic waves
radio waves
audible sound waves
