EASY
NDA & NA EE
IMPORTANT
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Which one of the following statements about sound is not correct?
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Important Questions on Sound Waves
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NDA & NA EE
IMPORTANT
The loudness of sound depends upon the
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IMPORTANT
Compared to audible sound waves, ultrasound waves have
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IMPORTANT
Which of the following are the characteristics of electromagnetic waves?
1. They are elastic waves.
2. They can also move in vacuum.
3. They have electric and magnetic components which are mutually perpendicular.
4. They move with a speed equal to lakh meters per second.
Select the correct answer using the codes given below.
EASY
NDA & NA EE
IMPORTANT
At the speed of sound in water is approximately
