filter
  • Subject:

    ...

  • Topic:

    ...

Two radiations of photon energies 1 eV and

2.5 eV, successively illuminate a photosensitive

metallic surface of work function 0.5 eV. The 

ratio of the maximum speeds of the emitted 

electrons is 

(a) 1:4

(b) 1:2

(c) 1:1

(d) 1:5

NEET