Class 12

20. Current Electricity question bank (Physics)

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Q1.

When a uniform solid sphere and a disc of the same mass and of the same radius roll down an inclined smooth plane from rest to the same distance, then the ratio of the time taken by them is  

(A)
15 : 14
(B)
\(15^2 : 14^2\)
(C)
\(\sqrt{14} : \sqrt{15}\)
(D)
14 : 15
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Q2.

Two gases of equal mass are in thermal equilibrium. If \(P_a, V_a\) and \(P_b, V_b\) are their respective pressures and volumes, then which relation is true?

(A)
\(P_a \ne P_b,\ V_a = V_b\)
(B)
\(P_a = P_b,\ V_a \ne V_b\)
(C)
\(\frac{P_a}{V_a} = \frac{P_b}{V_b}\)
(D)
\(P_a V_a = P_b V_b\)
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