A perfect emitter or absorber of radiant energy is a
...A perfect emitter or absorber of radiant energy is a
conductor
black body
white body
red body
Correct answer is B
Dull, black surface are good emitters or absorbers of energy
Which of the following graphs of a charge Q against potential difference V across the capa...
A thin converging lens has a power of 4.0 diopters determined its focal length. ...
A radioactive isotope has a decay constant of 10-6s-1. Calculate its half - life?...
The defect of the eye lens which occurs as a result of weak ciliary muscles is called ...