The image formed on the retina of human eye is MCQ with Answer and Explanation

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The image formed on the retina of human eye is

A. Real and inverted

B. Virtual and erect

C. Real and erect

D. Virtual and inverted

Answer: Option A

Solution (By JKSSB Mock Tests)

Eye lens forms a real, inverted image on the retina. Brain processes it to perceive erect. Camera also forms real inverted image on film/sensor. The eye is like a convex lens system.

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Question #1

The device used to measure very high temperatures (e.g., furnace) is

A. Bolometer

B. Pyrometer

C. Thermocouple

D. Thermometer

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Correct Answer: Option B

Explanation:
Pyrometer measures high temperatures by radiation without contact.

This question belongs to: Science Physics

Question #2

A 40 W tube light consumes _____ energy in 8 hours.

A. 0.04 kWh

B. 320 kWh

C. 0.32 kWh

D. 5 kWh

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Correct Answer: Option C

Explanation:
Energy = 0.04 kW × 8 h = 0.32 kWh.

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Question #3

In a nuclear reactor, heavy water is used as

A. Moderator

B. Fuel

C. Coolant

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Correct Answer: Option A

Explanation:
Heavy water (D₂O) slows neutrons, good moderator.

This question belongs to: Science Physics

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