Lagrange points are also known as ______ points.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2: Libration Point.
Explanation:
- Lagrange Points are also known as Libration Points or Equilibrium Points.
- Definition: These are locations in space where the combined gravitational pull of two large bodies (such as the Sun and Earth) precisely equals the centripetal force experienced by a third, smaller body (such as a satellite).
- Significance: At these points, an object can maintain its position with very minimal fuel expenditure; therefore, they are considered 'parking spots' for satellites.
- Number: In any two-body system (such as the Earth-Sun system), there are a total of five Lagrange Points, designated as L1, L2, L3, L4, and L5.
Key Lagrange Points and Their Applications (for Revision):
- L1 (Lagrange Point 1): This point is located between the Sun and the Earth. India's Aditya-L1 mission is positioned here to enable continuous study of the Sun without any occultation (eclipses).
- L2 (Lagrange Point 2): This point is located behind the Earth, away from the Sun. The renowned James Webb Space Telescope (JWST) is situated at this very point.
- L4 and L5: These are also referred to as 'Trojan Points.' These are stable points where space debris or natural asteroids tend to accumulate.
Important Questions for Upcoming Examinations:
Question: What is the name of India's first solar mission, and to which Lagrange Point has it been sent?
Answer: Aditya-L1; it has been sent to the L1 point.
Question: How many Lagrange Points are there in total within the Sun-Earth system?
Answer: Five.
Question: At which Lagrange Point is the James Webb Space Telescope (JWST) situated?
Answer: At the L2 point.