Blackbody Radiation

Q. As the wavelength of the radiation decreases, the intensity of the black body radiations ____________

1. Increases
2. Decreases
3. First increases then decrease
4. First decreases then increase

Q. During blackbody radiation at a constant wavelength, intensity of radiation ___________ with increase in temperature.

1. Decreases
2. Increases
3. Remains same
4. Data insufficient

Q. In a blackbody, the intensity of an emitted radiation depends upon :

1. Pressure
2. Volume of substance taken
3. Temperature
4. None of the above

Q.

A black body is a perfect absorber and perfect emitter of radiation.

1. True

2. False

Q. Three black bodies are such that the maximum intensity of their wavelength are in the ratio ${\lambda }_{m_1}:{\lambda }_{m_2}:{\lambda }_{m_3}=1:(21{)}^{0.5}:(3{)}^{0.5}$.
Which of these is true for their temperature?

1. $T_1>T_3>T_2$
2. $T_1>T_2>T_3$
3. $T_3>T_2>T_1$
4. $T_3>T_1>T_2$

Q. In a blackbody, the intensity of an emitted radiation depends upon :

1. None of the above
2. Volume of substance taken
3. Temperature
4. Pressure

Q. As the wavelength of the radiation decreases, the intensity of the black body radiations ____________

1. Increases
2. Decreases
3. First increases then decrease
4. First decreases then increase

Q. A black body is a perfect absorber and perfect emitter of radiation.

1. True
2. False