Question

The following statement is true in case of total internal reflection:

• A. Light must travel from rarer to denser medium and angle of incidence should be greater than critical angle.
• B. Light must travel from denser to rarer medium and angle of incidence should be less than critical angle.
• C. Light must travel from denser to rarer medium and angle of incidence should be \(>\) 90°.
• D. Light must travel from denser to rarer medium and angle of incidence should be greater than critical angle.

Hint:

Total internal reflection is a phenomenon used in optical fibers and devices like periscopes and binoculars to guide light efficiently.

Answer 1

The Correct Option is D

Understand the conditions for Total Internal Reflection (TIR). Total internal reflection occurs when light travels from a denser to a rarer medium and the angle of incidence is greater than the critical angle. This prevents the light from refracting out of the denser medium and instead causes it to reflect internally.