A concave mirror is used to form an image of the sun on a white screen. If the lower half…
Physics · JEE Main · NTA Exams — Optics
A concave mirror is used to form an image of the sun on a white screen. If the lower half on the mirror were covered with an opaque card, the effect on the image on the screen would be
- to make the image less bright than before
- to make the lower half of the image disappear
- to prevent image from being focussed
- none of these
Answer
(A) to make the image less bright than before
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