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Topic Magnification
Asked 3 times across 3 UPSC exams over 4 years (2018–2022), peaking in 2022.
Key insights
- Most tested in CAPF — 1 of 3 PYQs
- Most asked in 2022
- Recurs across 2 years (2018–2022)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
CAPF 2018 → CDS 2022 → NDA 2022
How the concept evolved
Rising — more than half its appearances (3 of 3) are since 2016.
Related concepts
Ideas UPSC tests alongside this one — keep exploring.
Sample questions
You've seen the pattern — here are a few of the actual PYQs.
CDS2022
If the magnification produced by a lens is +2, then the image is :
- A erect, virtual and smaller than the object.
- B inverted, real and smaller than the object.
- C erect, virtual and larger than the object. ✓
- D inverted, real and larger than the object.
✓ Correct answer: (C)
Science & Technology › Physics & Chemistry
NDA2022
What is the magnification produced by a concave lens of focal length 10 cm, when an image is formed at a distance of 5 cm from the lens?
- A 2.0
- B 1.0
- C 0.5 ✓
- D 0.33
✓ Correct answer: (C)
Science & Technology › Physics & Chemistry
CAPF2018
Which of the following statements about optical microscope is/are correct?
- Both the eyepiece and objective of a microscope are convex lenses
- The magnification of a microscope increases with increase in focal length of the objective
- The magnification of a microscope depends upon the length of the microscope tube
- The eyepiece of a microscope is a concave lens
Select the correct answer using the code given below.
- A 1 and 3 ✓
- B 3 only
- C 3 and 4
- D 1, 2 and 4
✓ Correct answer: (A)
Science & Technology › Physics & Chemistry
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