Question 4: Wave Optics

Question

Assertion :
Incoming light reflected by earth
is partially polarised.
Reason :
Atmospheric particle polarise the
light.

Accepted Answer

When unpolarised light incoming from sun,
enters into atmosphere of earth, then it scattered
due to presence of atmospheric particles. The
scattered light seen in a direction perpendicular
to the direction of incidence is found to be plane
polarised. When incoming light incident on reflecting
surface of earth at an angle of polarisation, then
reflecting light is polarised. Little amount of light
incident on polarising direction, hence reflected
light is partially polarised.
Hence, assertion and reason both are true but
reason is not correct explanation of assertion.

Answer

If both assertion and reason are true and reason is the correct explanation of assertion.

Answer

If both assertion and reason are true, but reason is not the correct explanation of assertion.

Answer

If assertion is true, but reason is false.

Answer

If both assertion and reason are false.

Wave Optics

Assertion : Incoming light reflected by earth is partially polarised. Reason : Atmospheric particle polarise the light.

Choose the correct answer: