Q17. When UV light of wavelength 300 nm is incident on the metal surface having work function 2.13 eV , electron emission takes place. The stopping potential is: (Given hc $= 1240 \mathrm { eVnm }$ ) (1) 1.5 V (2) 4.1 V (3) 2 V (4) 4 V
Q17. When UV light of wavelength 300 nm is incident on the metal surface having work function 2.13 eV , electron emission takes place. The stopping potential is: (Given hc $= 1240 \mathrm { eVnm }$ )\\
(1) 1.5 V\\
(2) 4.1 V\\
(3) 2 V\\
(4) 4 V