MCQ Collection
Physics MCQs
Practice Physics questions with answers and explanations.
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Correct Answer: C. It is perpendicular to the direction of wave propagation
Explanation:
A transverse wave oscillates perpendicular to the direction in which the wave travels.
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Correct Answer: A. The electric field points in the direction a positive test charge would accelerate
Explanation:
Electric-field direction is defined by the force direction on a positive test charge.
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Correct Answer: A. A convex lens can converge parallel rays to a real focus
Explanation:
A convex lens is converging and brings parallel incident rays toward its principal focus.
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Correct Answer: D. The half-life is the time for the number of undecayed nuclei to fall to half its initial value
Explanation:
Half-life is a characteristic decay time at which the undecayed population becomes one half.
Correct Answer: 12.31
Explanation:
Speed=distance/time=160/13=12.31 m/s.
Correct Answer: 20
Explanation:
Newton’s second law gives F=ma=5×4=20 N.
Correct Answer: 62.5
Explanation:
K=½mv²=½×5×5²=62.5 J.
Correct Answer: 1.8
Explanation:
Ohm’s law gives I=V/R=9/5=1.800 A.
Correct Answer: 12
Explanation:
Newton’s second law gives F=ma=4×3=12 N.
Correct Answer: 32
Explanation:
K=½mv²=½×4×4²=32.0 J.
Correct Answer: 2
Explanation:
Ohm’s law gives I=V/R=8/4=2.000 A.
Correct Answer: 12
Explanation:
Wave speed v=fλ=4×3=12 m/s.
