Q 16. Find the focal length of a lens of power – 2.0 D. What type of lens is this?
The lens is concave because it's focal length is negative and is equal to -50 cm.
CBSE Class 10, 12 syllabus 2024-25 out; board restores two-level mathematics rule
CBSE Class 10 board exam 2024 passing criteria, eligibility for compartment; all you need to know
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