The uncertainty principle was proposed by MCQ with Answer and Explanation

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The uncertainty principle was proposed by

A. Schrödinger

B. Bohr

C. Heisenberg

D. Planck

Answer: Option C

Solution (By JKSSB Mock Tests)

Heisenberg's uncertainty principle: Δx·Δp ≥ h/4π.

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1

The process of evaporation causes

A. Cooling

B. Heating

C. Boiling

D. No temperature change

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Correct Answer: Option A

Explanation:
Evaporation absorbs latent heat from surroundings, cooling effect.

This question belongs to: Science Physics

Question #2

The image formed on the retina of human eye is

A. Virtual and inverted

B. Real and erect

C. Virtual and erect

D. Real and inverted

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Correct Answer: Option D

Explanation:
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.

This question belongs to: Science Physics

Question #3

A 1000 W heater is used for 2 hours. Energy consumed in kWh is

A. 1000 kWh

B. 0.5 kWh

C. 2000 kWh

D. 2 kWh

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Correct Answer: Option D

Explanation:
Power = 1 kW (1000 W). Time = 2 h. Energy = Power × time = 1 × 2 = 2 kWh. 1 kWh = 3.6 × 10⁶ J, but here answer in kWh. Commercial unit.

This question belongs to: Science Physics

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