The photoelectric effect was not observed for

  • Option 1)

    Potassium

  • Option 2)

    Rubidium

  • Option 3)

    Lithium 

  • Option 4)

    Caesium

 

Answers (1)

As learnt in

Photoelectric Effect -

The electrons are ejected from the metal surface as soon as the beam of light of a particular frequency strikes the surface.

-

 

 Lithium has a very high ionization potential on account of its very small size thus making photoelectric effect difficult.


Option 1)

Potassium

The option is incorrect.

Option 2)

Rubidium

The option is incorrect.

Option 3)

Lithium 

The option is correct.

Option 4)

Caesium

The option is incorrect.

Preparation Products

Knockout BITSAT 2021

It is an exhaustive preparation module made exclusively for cracking BITSAT..

₹ 4999/- ₹ 2999/-
Buy Now
Knockout BITSAT-JEE Main 2021

An exhaustive E-learning program for the complete preparation of JEE Main and Bitsat.

₹ 27999/- ₹ 16999/-
Buy Now
Exams
Articles
Questions