The rotational effect of a force on a body about an axis of rotation is described in terms of
Answer: D
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Two bodies A and B are of same mass and same amount of heat is given to both of them. If the temperature of A increases more than that of B because of heat addition, then
Answer: B
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Which tube used to produce X-ray?
Answer: A
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If a sound travels from air to water, the quantity that remain unchanged is
Answer: B
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What is the minimum velocity required for a rocket to overcome earth's gravity and travel into space?
Answer: B
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Decibel is the unit of
Answer: B
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Which law states, "The rate of loss of heat by a body is directly proportional to the difference in temperature between the body and the surroundings."
Answer: D
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Hot water is poured simultaneously in four metallic tumblers painted outside with different paints. After some time the water will be found to have cooled most in the tumbler painted.
Answer: B
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Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit
Answer: C
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Why does'nt the hydrogen atom emit X-rays?
Answer: C
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