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Q. Sound of frequency below 20 Hz is called
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Q. Compressions and Rarefactions are characteristic of
Q. Stress can be defined as ________ quantity.
Q. The SI unit for measuring work and energy is
Q. Tesla is a unit of magnetic :
Q. After long periods of use, a grey spot develops on the inside of a bulb. This is because
Q. The modulus of rigidity of a liquid is
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