Physics
Grade-10
Easy
Question
The angle between the principal axis of a spherical mirror and its surface at the pole is ___ degrees.
Hint:
90
The correct answer is: 90
the angle between the principal axs and the surface of the mirror depends on the point on the surface of the mirror that we are talking about.
The surface of the mirror is tangential to the point on the surface of the mirror that we are talking about.
The angle between the tangent anf radius of a cicle is 90°.
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