Why are concave mirrors used in solar device?
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Q - Why are concave mirrors used in solar device?
- Concave mirrors are used in solar devices to collect heat and radiations.
- Heat radiations from the sun coming from infinity are brought to focus by concave mirror in its focal plane.
- Because they are the only mirror which reflects the light towards the focus (Plane mirrors don’t have focus, convex mirrors have imaginary focus behind the mirror which reflects light away from the focus ).
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