The SI unit of luminous intensity is MCQ with Answer and Explanation
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Question #1
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The device used to convert solar energy into electrical energy is
Question #2
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Which of the following physical quantities has the dimensional formula [M^1 L^2 T^-3 A^-2]?
Correct Answer: Option C
Explanation:
Electrical resistance (R) is Voltage/Current. Voltage (V) is Work/Charge. Work is [ML^2T^-2] and Charge is [AT]. So, V = [ML^2T^-3A^-1]. Therefore, R = V/A = [ML^2T^-3A^-2]. Memorizing the dimensional formula for resistance is highly recommended for competitive exams.
Electrical resistance (R) is Voltage/Current. Voltage (V) is Work/Charge. Work is [ML^2T^-2] and Charge is [AT]. So, V = [ML^2T^-3A^-1]. Therefore, R = V/A = [ML^2T^-3A^-2]. Memorizing the dimensional formula for resistance is highly recommended for competitive exams.
Question #3
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Escape velocity from a planet of mass M and radius R is v. For another planet of mass 4M and radius 2R, escape velocity is
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