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can you find the focal length of a concave lens by forming the image of a distant object on a screen. give reason
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Answer:
For an object at infinity, all the paraxial rays after reflection from the concave mirror will pass through the focus, thus the image is formed at focus. Hence the focal length of the concave mirror can be determined by measuring the distance between the screen and the mirror.
Explanation:
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Explanation:
For an object at infinity, all the paraxial rays after reflection from the concave mirror will pass through the focus, thus the image is formed at focus. Hence the focal length of the concave mirror can be determined by measuring the distance between the screen and the mirror.
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