The focal length of a lens is +25 cm. Write the power of this lens.
Focal length = +25cm = 0.25cm
Power of lens = ?
So,
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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