NEET Physics Optical Instruments MCQ Question
Which of the following statements about optical instruments is correct?
The thin lens formula is applicable to both convex and concave lenses for any type of image.
The first focal point of a lens is always on the side opposite to the light source.
A virtual image is always formed at a distance greater than the focal length of the lens.
The distance of the image formed by a concave lens is always negative.
Correct Answer
Detailed Explanation
The thin lens formula (1/f = 1/v + 1/u) is valid for both convex and concave lenses and for both real and virtual images, as stated in the NCERT context. Other statements contain inaccuracies regarding focal points and image distances.
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