AP EAMCET202022 Sep 2020Evening ShiftPhysicsThermal Properties of MatterActual
The wavelength of maximum emitted energy ( _m ) of a body at 700 ~K is 4.08 m . If the temperature of the body is raised to 1400 ~K , then the value of _m will be
Options
- A) 1.02 m
- B16.32 m
- C8.16 m
- D2.04 m
Correct answer
D. 2.04 m
Step-by-step solution
Given, aligned & _ m₁ =4.08 m & T₁=700 ~K & T₂=1400 ~K & _ m₂ = _m=? aligned According to Wien's displacement law, aligned & _m 1 T _ m₂ _ m₁ = T₁ T₂ & _ m₂ = T₁ _ m₁ T₂ = 700 4.08 1400 =2.04 m & _m= _ m₂ =2.04 m aligned