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Which of the following is/are correct for sound?
1. It is a form of energy.
2. It does not need a medium to travel.
Choose the correct option from the codes given below:
Which of the following is/are correct for waves?
1. It is a disturbance in the medium.
2. Sound waves are mechanical waves.
Choose the correct option from the codes given below:
Which of the following is/are correctly matched?
1. Longitudinal wave ———- direction of particles parallel to direction of
propagation.
2. Transverse wave —————- direction of particles perpendicular to direction of
propagation.
3. Compression ——————————————————- density is low.
Choose the correct option from the codes given below:
Which of the following is/are true for speed of sound?
1. The speed of sound in a medium is inversely proportional to the temperature of
the medium.
2. The speed of sound decreases when we go from solid to gaseous state.
Choose the correct option from the codes given below:
Which of the following is/are uses of multiple reflection of sound?
1. Megaphones or loudhailers, horns
2. Stethoscope
3. Optical Fibre
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Which of the following is/are true for ultrasound?
1. It is a low frequency sound.
2. It is used to detect flaws in metal block.
3. It is used to get image of internal organs.
Choose the correct option from the codes given below: