question_answer

The energy of a photon of wavelength \[\lambda \]is given by   [CPMT 1974; CBSE PMT 1992; DCE 1998; BHU 2000; DPMT 2001]

A)            \[h\lambda \]                      

B)            \[ch\lambda \]

C)            \[\lambda /hc\]                  

D)            \[hc/\lambda \]