Consider the following statements.(A) Two spheres of same material have radii r1 and r2 respectively and temperatures 4000 K and 2000 K respectively. The energy radiated per second by first sphere is more than second sphere.(B) In thermal conduction, energy is transferred by transference of particles of conducting body.Select the correct option.(a) (A) is false but (B) is true.(b) Both (A) and (B) are true.(c) (A) is true but (B) is false.(d) Both (A) and (B) are false.
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a
Both (A) and (B) are true.
b
(A) is true but (B) is false.
c
(A) is false but (B) is true.
d
Both (A) and (B) are false.
answer is B.
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Detailed Solution
E αA T4 WHERE A=4 πR2In the method of conduction bodily movement of particles will not happen.
Consider the following statements.(A) Two spheres of same material have radii r1 and r2 respectively and temperatures 4000 K and 2000 K respectively. The energy radiated per second by first sphere is more than second sphere.(B) In thermal conduction, energy is transferred by transference of particles of conducting body.Select the correct option.(a) (A) is false but (B) is true.(b) Both (A) and (B) are true.(c) (A) is true but (B) is false.(d) Both (A) and (B) are false.