The SI unit of temperature is MCQ with Answer and Explanation

The SI unit of temperature is

A. Celsius

B. Reaumur

C. Fahrenheit

D. Kelvin

Answer: Option D

Solution (By JKExamLibrary)

SI base unit of thermodynamic temperature is kelvin (K). Celsius is derived unit, size 1°C = 1 K. Fahrenheit and Reaumur are other scales. Kelvin scale starts at absolute zero.

This question belongs to: Science Physics

Discuss this Question (0)

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

Practice More Physics Questions

Question #1 Report Error

SONAR is based on the principle of:

A. Diffraction of sound waves

B. Reflection of sound waves

C. Refraction of sound waves

D. Polarization of sound waves

View Answer & Solution Discuss

Correct Answer: Option B

Explanation:
SONAR (Sound Navigation and Ranging) relies on the reflection of ultrasonic waves. A transmitter sends out sound waves, which travel through water, strike an object (like a submarine or the seabed), and reflect back as an echo to a receiver. By measuring the time taken for the echo to return, the distance can be calculated.

This question belongs to: Science Physics

Question #2 Report Error

The rate of change of momentum is equal to

A. Power

B. Force

C. Impulse

D. Work

View Answer & Solution Discuss

Correct Answer: Option B

Explanation:
F = dp/dt (Newton's second law original form). Impulse is Δp. Work F·s. Power dW/dt.

This question belongs to: Science Physics

Question #3 Report Error

The function of a fuse in a domestic circuit is to

A. Reduce current

B. Increase power factor

C. Regulate voltage

D. Protect against short circuit and overload

View Answer & Solution Discuss

Correct Answer: Option D

Explanation:
Fuse is a safety device: thin wire melts when current exceeds safe limit due to short circuit or overload, breaking circuit. Prevents fire and appliance damage. Based on heating effect. MCB is modern alternative.

This question belongs to: Science Physics

Explore All Physics MCQs