An earthquake of magnitude 6 on Richter scale has ______________ times more destructive energy than an earthquake of magnitude 4.
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Calculate the frequency (in Hz) of a sound wave of wavelength 5 m travelling with a speed of 360 m/s.
As a sailor jumps in the forward direction, the boat moves backwards. This example illustrates Newton's :
The motion of a freely falling body is an example of ________________________ motion.
The side mirrors of vehicles are of which type of mirrors?
Propagation of sound can be visualised as propagation of _____________ variations in the medium.
What is the unit of the physical quantity, Electrical conductance?
Which of the following waves cannot be polarised?
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