$A$ metal surface emits photoelectrons when the incident radiation possesses a minimum.....

The frequency of a wave of light is $12 \times 10^{14} \ s^{-1}$. The wave number associated with this light is

Linear spectrum (line spectrum) is a characteristic of which of the following?

Which one of the following frequencies of radiation (in $Hz$) has a wavelength of $600 \ nm$?

Given below are two statements about $X$-ray spectra of elements :
Statement $(I) :$ $A$ plot of $\sqrt{\nu}$ ($\nu =$ frequency of $X$-rays emitted) vs atomic mass is a straight line.
Statement $(II) :$ $A$ plot of $\nu$ ($\nu =$ frequency of $X$-rays emitted) vs atomic number is a straight line.
In the light of the above statements choose the correct answer from the options given below :

Electromagnetic radiations of frequency $\nu$ consist of a stream of particles called photons. Which of the following statements is / are true about photons: