Question

When did the 'APPLE' satellite launch?
A. 19 June 1981
B. 21 June 1981
C. 15 August 1981
D. 26 January 1981

Answer 1

Hint: A satellite is an object in space that orbits or circles a bigger object. There are two types of satellite Natural and artificial. Here we are talking about artificial satellite 'APPLE'.

Complete answer:
Artificial satellites are human built objects orbiting the Earth and other planets in the solar system. All such satellites are launched to space and into orbit by hitting a ride on a rocket or on the space shuttle, where they are placed inside the cargo bay.
The Ariane Passenger Payload Experiment ( APPLE) was ISRO's first indigenous, experimental communication satellite.

Ariane Passenger PayLoad Experiment, APPLE was an experimental communication satellite successfully launched by Ariane -1 from Kourou, French Guiana on june 19, 1981.
On 21 june 1981, after launching the Apple satellite, the final 48 hour countdown to ISRO's record breaking mission, which placed 20 satellites - 17 from abroad - in the same orbit.
The prime minister's address to the Nation on August 15 1981 from the Red Fort was carried live by APPLE.
On 26 January 1981 NASA's space suit underwent its final test for flight. Suit material include:- ortho-fabric aluminized mylar, neoprene -coated nylon, dacron,urethane-coated nylon,tricot, nylon, stainless steel, and high strength composite material.

Hence the correct answer is option A.

Note: The Ariane Passenger Payload Experiment (Apple), was an experimental communication satellite with a C-Band transponder launched by the Indian Space Research Organisation on june 19, 1981. APPLE was used for nearly 2 years to carry out extension experiments on time, frequency and code division, multiple access system, Radio networking computer interconnect, random access and packet switching experiments.