The plots of intensity versus wavelength for three black bodies at temperature $T_{1}$ , $T_{2}$ and $T_{3}$ respectively are as shown. Their temperatures are such that [2000]

Question

Smart Achievers · Accepted Answer

(2)

According to Wien's displacement law, $λ T = constant$

From graph $λ_{1} < λ_{3} < λ_{2}$ $∴$ $T_{1} > T_{3} > T_{2}$

Solution

Q.
The plots of intensity versus wavelength for three black bodies at temperature $T_{1}$ , $T_{2}$ and $T_{3}$ respectively are as shown. Their temperatures are such that [2000]

1 $T_{1} > T_{2} > T_{3}$

2 $T_{1} > T_{3} > T_{2}$

3 $T_{2} > T_{3} > T_{1}$

4 $T_{3} > T_{2} > T_{1}$

Ans.
(2)

According to Wien's displacement law, $λ T = constant$

From graph $λ_{1} < λ_{3} < λ_{2}$ $∴$ $T_{1} > T_{3} > T_{2}$

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Solution

Q. The plots of intensity versus wavelength for three black bodies at temperature T1, T2 and T3 respectively are as shown. Their temperatures are such that [2000]

1 T1>T2>T3

2 T1>T3>T2

3 T2>T3>T1

4 T3>T2>T1

Ans. (2) According to Wien's displacement law, λT=constant From graph λ1<λ3<λ2 ∴ T1>T3>T2