The pressure of one mole of an ideal gas of volume 10\(^-2\) m\(^3\) at a temperature of 27°c is
[molar gas constant = 8.3 J mol\(^{-1}\) k\(^{-1}\)]

Which of the following has no effect on radiation?

The wavelength of a wave traveling with a velocity of 420 ms\(^{-1}\) is 42 m. What is its period?

The sound of an electricity bell dies down slowly when air is slowly pumped out from a bottle because

During a thunderstorm, the sound is heard over a long time. this phenomenon is referred to as?