When a ray of light travels obliquely from a rarer medium to a denser medium, it bends away from the normal.

(a) State Snell's law of refraction of light. (b) A transparent medium A floats on another transparent medium B. When a ray of light travels obliquely from A into B, the refracted ray bends away from from the normal. Which of these two media A or B are optically denser and why ?

A ray of light travelling obliquely from glass to air :

When a light ray from a rarer medium is refracted into a denser medium, its

When a ray of light travels from optically denser medium to optically rarer medium, it always bends towards the normal.

When a ray of light from air enters a denser medium, it :

Assertion A ray of light travels from first medium to second medium. In first medium, angle of ray with normal is i_(1) =30^(@) and in second medium i_(2) = 60^(@) Then, second medium is rarer medium.

When a ray of light travels from an optically less denser medium to an optically more denser medium, the angle of incidence is always less than angle of refraction.

When a ray of light travles from an optically more denser medium to an optically less denser medium, the angle of incidence is always _____ than the angle of refraction.

A ray of light is moving from a rarer medium to a denser medium and strikes a plane mirror placed at 90^(@) to the direction of the ray as shown in the diagram. Name the principle you have used to mark the arrows to show the direction of the ray.