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Q.

Match the statements in Column I with the results in Column II.

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a

A-qs  B-pr   C-ps  D-pr

b

A-ps  B-qs   C-pr  D-pr

c

A-pr  B-pr   C-qs  D-ps

d

A-ps  B-pr   C-qs  D-pr

answer is D.

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Detailed Solution

(A) mcdTdt=σST4−T04dTdt∝Sm∝4πR2ρ4πR2t∝1thicknessAlso,  dTdt∝T4−T04With time temperature of body will decrease, so the rate dTdt will also decrease.(B) V=kQdFor outside point , the charge is assumed to be concentrated at center of bubble. (C) F=ρS v2=ρS2ghA water level falls , h decreases, hence F also decreases. (D) ϕB=0Since, magnetic field lines are neither able to cross curved surface, nor the flat surface. Hence, magnetic flux is zero.
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