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Lens power

8 PYQ across 3 exams · 2020–2024 — the complete chronological timeline of how UPSC has tested this idea, oldest to newest.

NDA 2020 → CDS 2020 → CAPF 2022
20202 PYQs
CDSQ101
Which of the following lenses will bend the light rays through largest angle?…
NDAQ142
A lens has a power of +2·0 Dioptre. Which one of the following statements about the lens is true ?…
20211 PYQ
NDAQ132
Power of a lens of focal length 25 cm is…
20222 PYQs
CAPFQ25
The magnitude of focal length of a concave lens is 2 m. What is the power of the lens?…
NDAQ131
Two convex lenses have focal lengths of 50 cm and 25 cm, respectively. If these two lenses are placed in contact, then the net power of this…
20232 PYQs
CDSQ10
The power of a lens of focal length 10 cm is…
NDAQ85
Ramesh cannot see distinctly objects kept beyond 2 m. This defect can be corrected by using a lens of power…
20241 PYQ
NDAQ121
Which one among the following is the correct focal length of a combination of lenses of power 2.5 D and -2.0 D ?…
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Optics
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