HARD
10th CBSE
IMPORTANT
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To obtain a magnification of +2 with a concave mirror of radius of curvature 60 cm the object distance must be

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Important Questions on Light - Reflection and Refraction

MEDIUM
10th CBSE
IMPORTANT
In torch lights and head lights of vehicles, the bulb is placed
MEDIUM
10th CBSE
IMPORTANT
The change in the focal length of an eye lens in human beings are caused by the action of