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PHYSICS

Physics
Submerged objects can be located using

Sonar
Quasar
Radar
Pulsar

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Physics
The velocity of sound is more in

Water
Wood
Air
Steel

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Physics
Echo is heard due to

Reflection
Interference
Scattering
Refraction

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Physics
A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is

Of higher intensity when train arrives
The same in both cases in all respects
Of higher pitch when train departs
Of higher pitch when train arrives

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Physics
The sound produced by a bat is–

Audible
Ultrasonic
Subsonic
Infrasonic

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