The splitting of white light by a prism is due to MCQ with Answer and Explanation

Question

Share Report Error

The splitting of white light by a prism is due to

A. Reflection

B. Dispersion

C. Interference

D. Diffraction

Answer: Option B

Solution (By JKSSB Mock Tests)

Different colours have different speeds/refractive indices in glass, causing dispersion.

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

Gravity work for horizontal motion:

A. Positive

B. Negative

C. Speed dependent

D. Zero

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option D

Explanation:
Gravity acts vertically; horizontal displacement ⇒ angle = 90° ⇒ W = Fd cos90° = 0. No work for perpendicular force-displacement. Memory aid: 'Work = Fd cosθ; θ=90° ⇒ W=0'. Mechanics concept frequently tested to correct misconception that force always does work.

This question belongs to: Science Physics

Question #2

A wooden block floats with half its volume submerged in water. Density of wood is

A. 0.25 g/cm³

B. 1 g/cm³

C. 0.5 g/cm³

D. 2 g/cm³

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option C

Explanation:
ρ_wood V g = ρ_water (V/2) g => ρ_wood = 0.5 ρ_water = 0.5 g/cm³.

This question belongs to: Science Physics

Question #3

Nuclear fusion combines:

A. Heavy nuclei

B. Neutrons and protons

C. Light nuclei

D. Protons and electrons

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option C

Explanation:
Fusion: light nuclei (e.g., hydrogen) combine to form heavier nucleus (helium), releasing energy (stars, H-bomb). Fission splits heavy nuclei (U, Pu). Memory tip: 'Fusion = joining light; Fission = splitting heavy'. Nuclear reaction concept frequently tested in competitive modern physics sections.

This question belongs to: Science Physics

Explore All Physics MCQs