Question

Which property of sodium is being used in street lights ?
(a) It shows photoelectric effect
(b) It has low melting point
(c) Sodium atom emits photons in the yellow region of visible spectrum, due to electrically stimulated transitions
(d) Sodium vapours show golden colour

Answer 1

HELLO DEAR FRIEND

YOUR ANSWER WILL BE

(a) It shows photoelectric effect.

HOPE IT HELPS YOU DEAR FRIEND THANKS

Answer 2

$\huge{ \boxed{\bf\red{{ANSWER }}}}$

Correct Answer is : (a) It shows photoelectric effect