Which one of the following can be used to focus sunlight?
مندرجہ ذیل میں سے کون سا سورج کی روشنی کو فوکس کرنے کے لیے استعمال کیا جا سکتا ہے؟
- Concave lens
- Plane mirror
- concave mirror
- convex mirror
- none of these
Explanation
In solar furnaces, concave mirrors are used for converging the sun's rays.
concept:
Concave mirrors reflect and focus incoming light rays (parallel) at a point, called the focus point.
Depending on the distance of an object from the reflecting surface, different types of images are formed.
ND06-08-2023
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