The phenomenon of bending of light around corners is called MCQ with Answer and Explanation

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The phenomenon of bending of light around corners is called

A. Diffraction

B. Dispersion

C. Reflection

D. Refraction

Answer: Option A

Solution (By JKSSB Mock Tests)

Diffraction is bending around obstacles/apertures.

This question belongs to: Science Physics

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A nuclear reactor uses control rods made of

A. Uranium

B. Cadmium

C. Graphite

D. Heavy water

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Correct Answer: Option B

Explanation:
Cadmium or boron absorb neutrons to control chain reaction.

This question belongs to: Science Physics

Question #2

A lactometer is used to check

A. Purity of milk

B. Blood pressure

C. Purity of water

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Correct Answer: Option A

Explanation:
Measures specific gravity of milk, indicates adulteration.

This question belongs to: Science Physics

Question #3

Concave mirror forms real image when object is placed:

A. Between pole and focus

B. Beyond focus

C. At pole

D. At focus

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Correct Answer: Option B

Explanation:
Concave mirror: real, inverted image forms when object beyond focal point (u > f). Between pole and focus: virtual, erect image. At focus: image at infinity. Memory aid: 'Concave: object beyond F ⇒ real image; within F ⇒ virtual'. Ray optics concept frequently tested to verify mirror image formation understanding in competitive exams.

This question belongs to: Science Physics

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