A beam of light travels from air into a glass block. The angle of incidence is increased from 20^\circ to 40^\circ. Using the idea of refraction, what happens to the angle of refraction in the glass?

It increases but remains smaller than the angle of incidence.

It decreases and becomes zero at 40^\circ incidence.

It stays the same for all angles of incidence.

It becomes larger than the angle of incidence.

SC-476

Refraction

Lower Sec Science · Secondary 1 · Hard · Refraction

A beam of light travels from air into a glass block. The angle of incidence is increased from

20^\circ

40^\circ

. Using the idea of refraction, what happens to the angle of refraction in the glass?

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