When an unpolarized light of intensity `I_(0)` is incident on a polarizing sheet, the intensity of the light which does not get transmitted is

Options

A. ` ( 1 ) / ( 2 ) l _ 0 `
B. ` ( 1 )/ ( 4 ) l _ 0 `
C. zero
D. `l _ 0 `

Answer

A

Explanation

According to law of Malus
` I = I _ 0 cos ^ 2 theta `
Intensity of polarised light = ` (I _ 0 ) / ( 2 ) `
` therefore ` Intensity of utransmitted light
` = I _ 0 - ( I _ 0 ) /( 2 ) = ( I _ 0 ) /( 2 ) `