A laser beam shown in the figure below enters a solid glass sphere and reaches the back of it. The sphere has an index

[answerhappygod]

A laser beam shown in the figure below enters a solid glass
sphere and reaches the back of it. The sphere has an index of
refraction of 2.4. Assume the sphere is surrounded by
air.

A Laser Beam Shown In The Figure Below Enters A Solid Glass Sphere And Reaches The Back Of It The Sphere Has An Index 1 (84.75 KiB) Viewed 10 times

(a) Find what the angle θ must be in order for the
refracted beam to reach the back of the sphere. The dashed
lines are supposed to be reference lines.
(b) Does beam that strikes the back of the sphere undergo
total internal reflection? Find the critical angle at the
point where the beam hits the back of the sphere and use it to
explain whether total internal reflection occurs at the back of the
sphere or not.
horizontal reference lines laser beam reference line along redins of sphere • reference line along radius of sphere