Physics
Grade-10
Easy
Question
A normal line to the reflecting surface of a concave mirror can be drawn easily by _____.
- Using a protractor to draw a line at 90-degree angle with the surface
- Joining the center of curvature and the point considered
- Using a compass, a ruler, and a pencil to draw a line at 90-degree angle with the surface
- None of the above
Hint:
Joining the centre of curvature and the point considered
The correct answer is: Joining the center of curvature and the point considered
in a spherical mirror, normal drawn on any point on a spherical mirror passes through the center of curvature.
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