Question

Minimum angle of incidence in the denser medium for which angle of refraction becomes 90° is called _________ .

Answer 1

Answer:

CRITICAL ANGLE

Explanation:

When light travels from denser to rarer medium, the angle of incidence at which angle of refraction is 90 degree is called critical angle of incidence . Answer: crtical angle is the minimum angle of incidence for which the light gets refracted at 90 degree

Answer 2

critical angel

mark as brillienst answer