Question

Identify the correct statement in the context of communication systems. [label=\roman*.]
• Radio and Television are forms of mass communication.
• Satellite communication is essential for remote sensing and weather forecasting.
• The Internet has emerged as the fastest means of communication.
• All India Radio AIR was renamed Akashvani in 1957.

• A. i and ii only
• B. iii and iv only
• C. i, ii, iii are correct
• D. All are correct

Hint:

Important years: 1923 -- First Radio Broadcast in India
1936 -- Named All India Radio (AIR)
1957 -- Renamed Akashvani

Answer 1

The Correct Option is D

Concept: Communication systems are extremely important for connecting people, transferring information, and supporting economic and social development. Modern communication systems include radio, television, satellites, telephones, and the internet.

Step 1: Analyzing Statement (i).
Radio and Television are forms of mass communication because they transmit information to millions of people simultaneously. They are used for:
• News broadcasting
• Education
• Entertainment
• Public awareness Hence, statement (i) is correct.

Step 2: Analyzing Statement (ii).
Satellite communication plays a vital role in:
• Weather forecasting
• Disaster management
• Remote sensing
• Telecommunications India uses INSAT and IRS satellite systems for these purposes. Therefore, statement (ii) is correct.

Step 3: Analyzing Statement (iii).
The Internet enables instantaneous communication across the globe through emails, social media, video conferencing, and data transfer. Due to its speed and accessibility, it is regarded as the fastest means of communication in the modern world. Hence, statement (iii) is correct.

Step 4: Analyzing Statement (iv).
All India Radio (AIR) was officially renamed Akashvani in the year 1957. Thus, statement (iv) is also correct.

Step 5: Final conclusion.
All four statements are correct. \[ \boxed{\text{(D) All are correct}} \]