Which of the following statements does not hold good for thermal radiation?

  • A
    The wavelength changes when it travels from one medium to another.
  • B
    The frequency changes when it travels from one medium to another.
  • C
    The speed changes when it travels from one medium to another.
  • D
    They travel in a straight line in a given medium.

Explore More

Similar Questions

For an opaque body,the coefficient of transmission is:

Out of the following, which statement is $NOT$ true about black body radiation?

If $150 \,J$ of energy is incident on an area of $2 \,m^{2}$. If $Q_{r}=15 \,J$ and the coefficient of absorption is $0.6$,then the amount of energy transmitted is: (in $\,J$)

For a perfectly black body,its absorptive power is

$A$ body is said to be opaque to the radiation if ($a$,$r$,and $t$ are the coefficients of absorption,reflection,and transmission,respectively).

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo