Microwave oven heats food by MCQ with Answer and Explanation
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Question #1
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Two objects of masses 1 kg and 4 kg have equal momentum. What is the ratio of their kinetic energies?
Correct Answer: Option A
Explanation:
Kinetic Energy (K) is related to momentum (p) by the formula K = p² / 2m. Since they have equal momentum, p is constant. Therefore, K is inversely proportional to mass (K ∝ 1/m). Ratio of kinetic energies K1/K2 = m2/m1 = 4/1 = 4:1. The lighter object has more kinetic energy.
Kinetic Energy (K) is related to momentum (p) by the formula K = p² / 2m. Since they have equal momentum, p is constant. Therefore, K is inversely proportional to mass (K ∝ 1/m). Ratio of kinetic energies K1/K2 = m2/m1 = 4/1 = 4:1. The lighter object has more kinetic energy.
Question #2
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Water boils at a lower temperature at high altitudes because
Question #3
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Which of the following is not a source of renewable energy?
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