Home
Class 9
PHYSICS
PASSAGE-III: An Unidentified Flying Obje...

PASSAGE-III: An Unidentified Flying Object (UFO) lands on a planet at a point 5 kilometres from an active volcano. There is a volcanic explosion. The time interval between the flash of light from the volcanic explosion and the sound of eruption was registered as 100 s. The time period of wave is 2 s.
The speed of sound on the planet is

A

25m s`""^(-1)`

B

50m s`""^(-1)`

C

75m s`""^(-1)`

D

100m s`""^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
We have, distance `=` speed `xx` time
`therefore` Speed of sound `= ("Distance travelled")/("Time taken")`
`= (5000 m)/(100 s) = 50"m s"^(-1)`
Promotional Banner

Topper's Solved these Questions

  • SOUND

    MTG IIT JEE FOUNDATION|Exercise Exercise (Subjective Problems) Very Short Answer Type|15 Videos

  • SOUND

    MTG IIT JEE FOUNDATION|Exercise Exercise (Subjective Problems) Short Answer Type|21 Videos

  • SOUND

    MTG IIT JEE FOUNDATION|Exercise Exercise (Assertion & Reason Type)|10 Videos

  • MOTION

    MTG IIT JEE FOUNDATION|Exercise Olympiad/HOTS Corner|21 Videos

  • THRUST AND PRESSURE

    MTG IIT JEE FOUNDATION|Exercise Olympiad/HOTS Corner|15 Videos

Similar Questions

Explore conceptually related problems

A ship at rest is sending ultrasonic sound waves to detect a shoal of fish. If the time gap between the signal sent from the ship and received (reflected) signal is 0.5 s, then find the distance of the shoal of fish form the ship. (Velocity of sound in water is 1400 ms^(-1) )

A sonar emits pulses on the surface of water which are detected after reflection from its bottom at a depth of 1531 m . If the time interval between the emission and detection of the pulse is 2 s , find the speed of sound in water.

Two boys stand close to a long straight metal pipe and at some distance from each other. One boy fires a gun and the other hears two explosions , with a time interval of one second between them. If the velocity of sound in metal is 3630 m s^(-1) and in air is 330 m s^(-1) , the distance between the two boys is

The car in the figure is moving to the left at 35 m/s. The car's horn continuously emits a 2.20 xx 10^2 Hz sound. The figure also shows the first two regions of compression of the emitted sound waves. The speed of sound is 343 m/s. How far does the car move in one period of the sound emitted from the horn?