JEE Main Rank Booster 2021
This course will help student to be better prepared and study in the right direction for JEE Main..
₹ 13999/-
₹ 9999/-
Buy Now
As we learnt in
Photoelectric Effect -
It is the emission of electrons (photoelectron) when light strikes a surface.
- wherein
X-rays ,
-rays ,UV -rays ,visible light and even infra red rays of suitable frequency.
Time taken is of the order of nanosecond i.e. around 10-10 sec.
Correct answer is 3.
Option 1)
10-1 s
This is an incorrect option.
Option 2)
10-4 s
This is an incorrect option.
Option 3)
10-10 s
This is the correct option.
Option 4)
10-16 s
This is an incorrect option.