MCQ Collection
MDCAT Physics MCQs
Practice MDCAT Physics questions with answers and explanations.
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Correct Answer: A. 50,000 Pa
Explanation:
Hydrostatic pressure is ρgh.
P=1000×10×5 = 50,000 Pa.
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Correct Answer: B. 2000 N
Explanation:
The pressure is 100/0.01 = 10,000 Pa.
Output force is 10,000×0.20 = 2000 N.
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Correct Answer: B. 400 J
Explanation:
Potential energy change is mgh.
5×10×8 = 400 J.
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Correct Answer: B. 12 N·m
Explanation:
Rotational dynamics gives τ=Iα.
τ=3×4 = 12 N·m.
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Correct Answer: C. 200 W
Explanation:
Power is work divided by time.
P=600/3 = 200 W.
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Correct Answer: C. 6 N·m
Explanation:
Opposing torques subtract.
The net magnitude is 15-9 = 6 N·m.
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Correct Answer: D. 20,000 J
Explanation:
Energy transferred is Pt.
1000×20 = 20,000 J.
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Correct Answer: D. Mass per unit volume
Explanation:
Density measures how much mass is contained in a given volume.
Its SI unit is kg/m³.
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Correct Answer: A. 100 J
Explanation:
Net work equals the change in kinetic energy.
Kf=20+80 = 100 J.
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Correct Answer: A. Normal force per unit area
Explanation:
Pressure describes how force is distributed over a surface.
Its SI unit is the pascal.
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Correct Answer: B. 40 J
Explanation:
ΔK=½m(v²-u²).
With m=2, ΔK=49-9 = 40 J.
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Correct Answer: B. Pressure applied to an enclosed fluid is transmitted undiminished
Explanation:
Pascal's principle is used in hydraulic machines.
The same pressure can produce different forces on different piston areas.
