Why in the news?

For the second time, the launch of AgniKul ‘Agnibaan SOrTeD’ has been postponed.
The IIT Madras-based Agnikul Cosmos was to test-fire an Agnibaan rocket with 3D-printed engine, aiming for suborbital flight trajectory control.

What is Agnibaan SOrTeD (Suborbital Tech Demonstrator)?

Agnibaan SOrTeD is a single-stage launch vehicle powered by Agnikul’s patented Agnilet semi-cryogenic engine.
In contrast to traditional sounding rockets, Agnibaan SOrTeD’s vertical take-off and precise trajectory enable orchestrated maneuvers during flight.

Customizability: The rocket offers custom launch configurations, either single or two-stage launches.
Dimensions: Standing at 18 meters and weighing 14,000 kg, Agnibaan SOrTeD is a powerful presence.
Payload Capacity: With a capacity for payloads of up to 100 kg, it can reach altitudes of 700 km in five different Lower Earth Orbits (LEOs).
Engine Configuration: The first stage can house up to seven Agnilet engines, powered by Liquid Oxygen and Kerosene, dependent on the mission’s requirements.
Launch Pedestal ‘Dhanush’: AgniKul’s built ‘Dhanush’ supports the rocket’s mobility across configurations, ensuring compatibility with multiple launch ports.
Agnilet Engine: Agnilet engine, a 3D-printed, single-piece, 6 kN semi-cryogenic marvel, drives Agnibaan’s propulsion. The engine employs a novel blend of liquid kerosene and supercold liquid oxygen as propellants.

[2011] Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when:

1. The orbit is geosynchronous.

2. The orbit is circular.

3. The orbit lies in the plane of the Earth’s equator.

4. The orbit is at an altitude of 22,236 km

Select the correct answer using the codes given below:

(a) 1, 2 and 3 only

(b) 1, 3 and 4 only

(d) 1, 2, 3 and 4