Which communication technology uses electromagnetic waves through space? MCQ with Answer and Explanation

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Which communication technology uses electromagnetic waves through space?

A. Telegraph

B. Wireless communication

C. Postal mail

D. Courier service

Answer: Option B

Solution (By JKSSB Mock Tests)

Wireless communication uses electromagnetic waves to transmit data without physical cables.

This question belongs to: Geography GK Transport and Communication

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Question #1

Which railway station is known as the headquarters of North Central Railway?

A. Prayagraj

B. Jhansi

C. Agra

D. Kanpur

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Correct Answer: Option A

Explanation:
North Central Railway is headquartered at Prayagraj, Uttar Pradesh.

This question belongs to: Geography GK Transport and Communication

Question #2

Which communication system is used for radio broadcasting?

A. Satellite only

B. Radio waves

C. Optical fiber

D. Postal mail

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Correct Answer: Option B

Explanation:
Radio broadcasting uses radio frequency waves.

This question belongs to: Geography GK Transport and Communication

Question #3

Which organization manages Indian Railways?

A. Ministry of Railways

B. NHAI

C. Ministry of Shipping

D. Ministry of Transport

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Correct Answer: Option A

Explanation:
The Ministry of Railways is responsible for managing and operating Indian Railways.

This question belongs to: Geography GK Transport and Communication

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