Nuclear fusion requires MCQ with Answer and Explanation

Question Report Error

Nuclear fusion requires

A. High temperature only

B. Low temperature and high pressure

C. High temperature and high pressure

D. Low temperature and low pressure

Answer: Option C

Solution (By JKExamLibrary)

Overcome Coulomb repulsion between nuclei, need extreme temperature and pressure.

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1 Report Error

The SI unit of electric current is

A. Coulomb

B. Ohm

C. Volt

D. Ampere

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Correct Answer: Option D

Explanation:
Ampere (A) is base unit, defined via force between conductors. 1 A = 1 C/s. Coulomb is charge. Volt potential. Ohm resistance.

This question belongs to: Science Physics

Question #2 Report Error

When a source of sound moves faster than the speed of sound itself in that medium, it creates a conical wave front known as a:

A. Shock wave

B. Transverse wave

C. Beat frequency

D. Standing wave

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Correct Answer: Option A

Explanation:
When an object (like a jet plane) exceeds the speed of sound (Mach 1), it overtakes the sound waves it produces. These sound waves pile up behind the object, superimposing constructively to form an intense, cone-shaped pressure wave called a shock wave. When this high-pressure cone sweeps over an observer on the ground, they hear a loud 'sonic boom'.

This question belongs to: Science Physics