What is the use of 'Li-Fi' technology? MCQ with Answer and Explanation

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What is the use of 'Li-Fi' technology?

A. Magnetic fields

B. Sound waves

C. Data transmission using light

D. Radio waves

Answer: Option C

Solution (By JKExamLibrary)

Li-Fi uses visible light for wireless communication.

This question belongs to: Static General Knowledge Science and Technology

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Question #1 Report Error

What technology is used in LiDAR?

A. Sound waves

B. Radio waves

C. Magnetic fields

D. Laser light

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Correct Answer: Option D

Explanation:
LiDAR uses laser pulses to measure distances and create 3D maps.

This question belongs to: Static General Knowledge Science and Technology

Question #2 Report Error

The first artificial satellite was launched in:

A. 1969

B. 1975

C. 1980

D. 1957

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Correct Answer: Option D

Explanation:
Sputnik 1 was launched in 1957.

This question belongs to: Static General Knowledge Science and Technology

Question #3 Report Error

Which of the following is a reusable rocket company?

A. NASA only

B. SpaceX

C. Both

D. ISRO

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Correct Answer: Option C

Explanation:
SpaceX pioneered reusable rockets; ISRO is developing RLV.

This question belongs to: Static General Knowledge Science and Technology

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