1.
The angle of reflection of a ray is 40°. Determine the angle between the surface of the mirror and the ray.
40°
50°
80°
180°
2.
A person who suffers from myopia
cannot see at all.
can see clearly from far.
can see clearly objects closer.
wears a converging lens for correction.
3.
The shape of the lens of the human eye is varied by the action of the
iris.
pupil.
ciliary muscle.
suspensory ligament.
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