The instrument used to view distant objects is MCQ with Answer and Explanation

Question Report Error

The instrument used to view distant objects is

A. Endoscope

B. Telescope

C. Periscope

D. Microscope

Answer: Option B

Solution (By JKExamLibrary)

Telescope (refracting/reflecting) makes distant objects appear nearer, magnified. Microscope for tiny near objects. Periscope uses mirrors to see over obstacles. Endoscope medical.

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1 Report Error

The gravitational constant G has dimensions

A. [M⁻¹L³T⁻²]

B. [M⁻²L³T⁻²]

C. [ML²T⁻²]

D. [M⁻¹L³T⁻¹]

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Correct Answer: Option A

Explanation:
F = G m1 m2 / r² => G = F r² / (m1 m2) => [MLT⁻²][L²]/[M²] = [M⁻¹L³T⁻²].

This question belongs to: Science Physics

Question #2 Report Error

The unit of electric power can be expressed as

A. Volt × ampere

B. Coulomb × volt

C. Ohm × meter

D. Joule × second

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Correct Answer: Option A

Explanation:
P = V I, so watt = volt × ampere.

This question belongs to: Science Physics

Question #3 Report Error

A passenger in a moving train tosses a coin which falls behind him. This shows that the motion of the train is:

A. Retarded

B. Along a circular track

C. Uniform

D. Accelerated

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Correct Answer: Option D

Explanation:
When the coin is tossed, it moves forward with the initial velocity of the train due to inertia of motion. If the train accelerates during the time the coin is in the air, the train moves faster and travels a greater distance horizontally than the coin. Thus, the coin falls behind the passenger.

This question belongs to: Science Physics

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