The frequency of a sound wave is 500 Hz and wavelength 0.68 m. Speed is MCQ with Answer and Explanation
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Question #1
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A device that converts light energy into electrical energy is
Question #2
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A body of mass 2 kg is moving with an acceleration of 5 m/s². The rate of change of its momentum is:
Correct Answer: Option D
Explanation:
According to Newton's Second Law of Motion, the rate of change of momentum is directly proportional to the applied unbalanced force. Rate of change of momentum = Force = mass × acceleration. Force = 2 kg × 5 m/s² = 10 Newtons (N). Note that '10 kg m/s' is a unit of momentum, not its rate of change.
According to Newton's Second Law of Motion, the rate of change of momentum is directly proportional to the applied unbalanced force. Rate of change of momentum = Force = mass × acceleration. Force = 2 kg × 5 m/s² = 10 Newtons (N). Note that '10 kg m/s' is a unit of momentum, not its rate of change.
Question #3
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C.V. Raman discovered the Raman effect in which year?
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