Which of the following is a semiconductor? MCQ with Answer and Explanation

Question

Share Report Error

Which of the following is a semiconductor?

A. Silicon

B. Silver

C. Copper

D. Iron

Answer: Option A

Solution (By JKSSB Mock Tests)

Silicon and germanium are semiconductors.

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 escape velocity of a body from Earth is v_e. If Earth's radius shrinks to 1/4th keeping mass constant, escape velocity becomes

A. 4 v_e

B. v_e/4

C. v_e/2

D. 2 v_e

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option D

Explanation:
v_esc ∝ √(1/R). If R→R/4, v_esc ∝ √(4) = 2. So 2v_e.

This question belongs to: Science Physics

Question #2

Share Report

The range of audible frequency is

A. 20 Hz - 20000 Hz

B. 20 kHz - 200 kHz

C. 0 - 20 Hz

D. 1 Hz - 100 Hz

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option A

Explanation:
20 Hz to 20 kHz.

This question belongs to: Science Physics

Question #3

Share Report

Conservative force work over closed path:

A. Zero

B. Negative

C. Path dependent

D. Positive

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option A

Explanation:
Conservative forces (gravity, spring): work path-independent ⇒ ∮F·dr = 0 over closed loop. Enables potential energy definition. Memory aid: 'Conservative: ∮F·dr = 0; enables energy conservation'. Mechanics foundation frequently tested in competitive exams.

This question belongs to: Science Physics

Explore All Physics MCQs