Nuclear fusion requires MCQ with Answer and Explanation

Question

Share Report Error

Nuclear fusion requires

A. High temperature only

B. Low temperature and low pressure

C. High temperature and high pressure

D. Low temperature and high pressure

Answer: Option C

Solution (By JKSSB Mock Tests)

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

This question belongs to: Science Physics

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Physics Questions

Question #1

Share Report

The number of base SI units is

A. 7

B. 8

C. 6

D. 5

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option A

Explanation:
Seven base units: metre, kilogram, second, ampere, kelvin, mole, candela. All other units derived. This is standard definition. Supplementary units radian and steradian now considered dimensionless derived units.

This question belongs to: Science Physics

Question #2

Share Report

A step-up transformer increases

A. Power

B. Current

C. Energy

D. Voltage

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option D

Explanation:
Step-up transformer increases voltage and decreases current proportionally (P = V×I constant ideal). Power constant (ignoring losses). Used in power transmission to reduce I²R losses. Step-down decreases voltage.

This question belongs to: Science Physics

Question #3

Share Report

Young's double slit: fringe width β = λD/d. If d doubled, β becomes:

A. Double

B. Same

C. Half

D. Four times

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option C

Explanation:
β ∝ 1/d. If d' = 2d, β' = β/2. Fringe width decreases with increased slit separation. Memory aid: 'β ∝ 1/d; wider slit separation ⇒ narrower fringes'. Wave optics proportionality frequently tested in competitive exams.

This question belongs to: Science Physics

Explore All Physics MCQs