The exit surface of a prism with refractive index n is coated with a material having refractive index n/2. When this prism is set for minimum angle of deviation, it exactly meets the condition of critical angle. The prism angle is _ _ _.

Optics: JEE Main 2026 Physics question

JEE Main 2026 · 24 Jan, Morning shift · Q44

JEE Main 202624 Jan, Morning shiftPhysicsMediumOptics190× since 2002

The exit surface of a prism with refractive index

n

is coated with a material having refractive index

\frac{n}{2}

. When this prism is set for minimum angle of deviation, it exactly meets the condition of critical angle. The prism angle is ______.

JEE Main 2026 · 24 Jan, Morning shift · Q44

JEE Main 202624 Jan, Morning shiftPhysicsMediumOptics190× since 2002

The exit surface of a prism with refractive index

n

is coated with a material having refractive index

\frac{n}{2}

. When this prism is set for minimum angle of deviation, it exactly meets the condition of critical angle. The prism angle is ______.