U10
TUVE ULEI
Total internal reflection of a cup of water will occur at the
water-air interface if a beam of light enters the air from the
water with an incident angle of (The refractive indices of
water is 1.3)

What is the role of the ocular lens?

Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?

In an experiment, how can i change human errors? be specific.