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Light and Optics MCQs

Practice important Light and Optics MCQs with answers, explanations, theory links, and exam-focused preparation.

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Light and Optics

Light and Optics MCQs With Answers

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CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A converging lens has f=20 cm and object distance 80 cm. Using magnitude form, image distance is:
A. 27.67 cm
B. 29.34 cm
C. 24 cm
D. 26.6667 cm
Correct Answer: D
v = fu/(u−f).
CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A converging lens has f=20 cm and object distance 60 cm. Using magnitude form, image distance is:
A. 32 cm
B. 30 cm
C. 31 cm
D. 29 cm
Correct Answer: B
v = fu/(u−f).
CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A converging lens has f=20 cm and object distance 50 cm. Using magnitude form, image distance is:
A. 30 cm
B. 33.3333 cm
C. 34.33 cm
D. 36.66 cm
Correct Answer: B
v = fu/(u−f).
CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A converging lens has f=20 cm and object distance 40 cm. Using magnitude form, image distance is:
A. 41 cm
B. 40 cm
C. 42 cm
D. 39 cm
Correct Answer: B
v = fu/(u−f).
CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A converging lens has f=20 cm and object distance 30 cm. Using magnitude form, image distance is:
A. 59 cm
B. 60 cm
C. 61 cm
D. 62 cm
Correct Answer: B
v = fu/(u−f).
CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A converging lens has f=15 cm and object distance 80 cm. Using magnitude form, image distance is:
A. 16.61 cm
B. 19.46 cm
C. 18.4615 cm
D. 20.31 cm
Correct Answer: C
v = fu/(u−f).
CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A converging lens has f=15 cm and object distance 60 cm. Using magnitude form, image distance is:
A. 21 cm
B. 19 cm
C. 20 cm
D. 22 cm
Correct Answer: C
v = fu/(u−f).
CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A converging lens has f=15 cm and object distance 50 cm. Using magnitude form, image distance is:
A. 19.29 cm
B. 23.57 cm
C. 21.4286 cm
D. 22.43 cm
Correct Answer: C
v = fu/(u−f).
CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A converging lens has f=15 cm and object distance 40 cm. Using magnitude form, image distance is:
A. 24 cm
B. 26 cm
C. 25 cm
D. 23 cm
Correct Answer: A
v = fu/(u−f).
CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A converging lens has f=15 cm and object distance 30 cm. Using magnitude form, image distance is:
A. 30 cm
B. 31 cm
C. 32 cm
D. 29 cm
Correct Answer: A
v = fu/(u−f).
CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A converging lens has f=10 cm and object distance 80 cm. Using magnitude form, image distance is:
A. 11.4286 cm
B. 10.29 cm
C. 12.43 cm
D. 12.57 cm
Correct Answer: A
v = fu/(u−f).
CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A converging lens has f=10 cm and object distance 60 cm. Using magnitude form, image distance is:
A. 12 cm
B. 13 cm
C. 11 cm
D. 14 cm
Correct Answer: A
v = fu/(u−f).
CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A converging lens has f=10 cm and object distance 50 cm. Using magnitude form, image distance is:
A. 13.5 cm
B. 12.5 cm
C. 13.75 cm
D. 11.25 cm
Correct Answer: B
v = fu/(u−f).
CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A converging lens has f=10 cm and object distance 40 cm. Using magnitude form, image distance is:
A. 12 cm
B. 14.33 cm
C. 14.66 cm
D. 13.3333 cm
Correct Answer: D
v = fu/(u−f).
CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A converging lens has f=10 cm and object distance 30 cm. Using magnitude form, image distance is:
A. 15 cm
B. 14 cm
C. 17 cm
D. 16 cm
Correct Answer: A
v = fu/(u−f).
CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A medium has refractive index 2. Speed of light in it is approximately:
A. 1.80e+08 m/s
B. 1.20e+08 m/s
C. 1.50e+08 m/s
D. 2.25e+08 m/s
Correct Answer: C
v=c/n.
CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A medium has refractive index 1.6. Speed of light in it is approximately:
A. 1.50e+08 m/s
B. 2.81e+08 m/s
C. 2.25e+08 m/s
D. 1.88e+08 m/s
Correct Answer: D
v=c/n.
CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A medium has refractive index 1.5. Speed of light in it is approximately:
A. 2.40e+08 m/s
B. 1.60e+08 m/s
C. 3.00e+08 m/s
D. 2.00e+08 m/s
Correct Answer: D
v=c/n.
CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A medium has refractive index 1.4. Speed of light in it is approximately:
A. 2.57e+08 m/s
B. 1.71e+08 m/s
C. 3.21e+08 m/s
D. 2.14e+08 m/s
Correct Answer: D
v=c/n.
CSS - PMS - CCE - PCS - Everyday Science Light and Optics
A medium has refractive index 1.33. Speed of light in it is approximately:
A. 1.80e+08 m/s
B. 3.38e+08 m/s
C. 2.26e+08 m/s
D. 2.71e+08 m/s
Correct Answer: C
v=c/n.
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