The unit of electric current in CGS system is MCQ with Answer and Explanation

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The unit of electric current in CGS system is

A. Coulomb

B. Ampere

C. Statampere

D. Abcoulomb

Answer: Option C

Solution (By JKSSB Mock Tests)

CGS electrostatic unit of current is statampere. EMU is abampere. SI is ampere.

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Question #1

Ideal gas internal energy depends on:

A. Pressure

B. All state variables

C. Volume

D. Temperature only

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Correct Answer: Option D

Explanation:
Ideal gas: no intermolecular forces ⇒ internal energy = kinetic energy ∝ T. U = f/2 nRT. Memory tip: 'Ideal gas: U = U(T) only; real gases have V dependence'. Thermodynamics concept frequently tested in competitive exams.

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Question #2

The human eye forms image on

A. Retina

B. Pupil

C. Cornea

D. Iris

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Correct Answer: Option A

Explanation:
Retina contains rods and cones. Cornea and lens focus, iris controls light.

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Question #3

The device used to hear heartbeats is

A. Telescope

B. Endoscope

C. Microscope

D. Stethoscope

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Correct Answer: Option D

Explanation:
Stethoscope amplifies sound.

This question belongs to: Science Physics

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