Science Quiz On ISRO’s Aditya-L1 With Answers

Aditya-L1 is India's first dedicated mission to study the Sun, aiming to enhance our understanding of solar activities and their impact on space weather. This mission places India among the elite group of nations conducting advanced solar research.

Through this quiz, you will explore fascinating facts and details about Aditya-L1, a landmark in ISRO's stellar journey. Get ready to challenge your intellect and deepen your appreciation for space science!

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Science Quiz On ISRO’s Aditya-L1 With Answers

Q1: On which date was the Aditya-L1 mission launched?

a) September 2, 2022

b) September 2, 2023

c) September 2, 2024

d) September 2, 2025

Answer: b) September 2, 2023

Explanation: The Aditya-L1 mission was successfully launched on September 2, 2023. This mission marks ISRO's first dedicated solar mission to study the Sun's outermost layer, the solar corona, and its impact on space weather.

Q2: What is the significance of Aditya-L1 being placed at the L1 Lagrangian point?

1. a) Provides a stable orbit for uninterrupted solar observations
2. b) Enables close-up observations of lunar surface features
3. c) Facilitates deep space exploration beyond the solar system
4. d) Allows for the study of Martian atmospheric dynamics

Answer: a) Provides a stable orbit for uninterrupted solar observations

Explanation: At L1 Lagrange Point, the gravitational forces of the Earth and the Sun balance out, creating a gravitational "sweet spot". Aditya-L1's positioning at the L1 allows the spacecraft to maintain a stable orbit relative to the Earth and the Sun. This stability ensures uninterrupted observations and studying solar phenomena like coronal mass ejections (CMEs), solar flares, and solar wind.

Q3: On which date did ISRO's Aditya-L1 mission achieve Halo-Orbit Insertion (HOI)?

1. a) January 6, 2022
2. b) January 6, 2023
3. c) January 6, 2024
4. d) January 6, 2025

Answer: c) January 6, 2024

Explanation: ISRO's Aditya-L1 mission achieved Halo-Orbit Insertion (HOI) on January 6, 2024. This milestone marked the spacecraft's successful placement into a halo orbit around the Sun-Earth Lagrangian Point L1, enabling continuous and stable observations of the Sun's corona and solar phenomena.

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Q4: Which phenomenon observed by Aditya-L1 is crucial for predicting geomagnetic storms on Earth?

1. a) Solar prominences
2. b) Coronal mass ejections (CMEs)
3. c) Solar wind disturbances
4. d) Sunspot activity

Answer: b) Coronal mass ejections (CMEs)

Explanation: Aditya-L1 observes coronal mass ejections (CMEs), which are crucial for predicting geomagnetic storms on Earth by causing disturbances in the solar wind interacting with Earth's magnetosphere.

Q5: What is the orbital period of Aditya-L1 in its halo orbit around the L1 Lagrangian point?

1. a) 178 days
2. b) 365 days
3. c) 30 days
4. d) 90 days

Answer: a) 178 days

Explanation: In its halo orbit, Aditya-L1 takes approximately 178 days to complete one revolution around the L1 Lagrangian point. This orbital period allows Aditya-L1 to maintain a stable position relative to Earth and the Sun, facilitating continuous observations of the Sun's corona and solar phenomena.

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Q6: What is the primary objective of ISRO's Aditya-L1 mission?

1. a) Study lunar surface composition
2. b) Explore the Martian atmosphere
3. c) Observe the Sun's corona
4. d) Search for exoplanets

Answer: c) Observe the Sun’s corona

Explanation: ISRO's Aditya-L1 mission aims to observe the Sun's corona to understand its dynamics and properties. The corona is crucial for studying solar wind and space weather phenomena affecting Earth and other planets.

Q7: What is the primary objective of the HEL1OS instrument onboard Aditya-L1?

1. a) Study solar flares in X-ray wavelengths
2. b) Measure solar wind properties
3. c) Monitor total solar irradiance
4. d) Capture images of the Sun in visible light

Answer: a) Study solar flares in X-ray wavelengths

Explanation: The HEL1OS (High Energy L1 Orbiting Solar Spectrometer) instrument onboard Aditya-L1 is designed to study solar flares by measuring X-ray emissions from the Sun. This helps in understanding the high-energy processes occurring in the solar corona during flare events.

Q8: How far is Aditya-L1 from Earth when placed in its operational orbit?

1. a) 100,000 km
2. b) 500,000 km
3. c) 1.5 million km
4. d) 10 million km

Answer: c) 1.5 million km

Explanation: Aditya-L1 is approximately 1.5 million kilometres away from Earth when positioned at the L1 Lagrangian point, ensuring a clear view of the Sun without interference from Earth's atmosphere.

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Q9: What is the duration of Aditya-L1's mission?

1. a) 6 months
2. b) 1 year
3. c) 5 years
4. d) Indefinite

Answer: c) 5 years

Explanation: Aditya-L1 is expected to have a mission duration of approximately 5 years, during which it will continuously observe the Sun's corona to study its long-term variability.

Q10: Which instrument onboard Aditya-L1 is dedicated to studying solar ultraviolet radiation?

1. a) HEL1OS
2. b) SUIT (Solar Ultraviolet Imaging Telescope)
3. c) LAP (Lyman Alpha Photometer)
4. d) PLAP (Plasma Analyser Package)

Answer: b) SUIT (Solar Ultraviolet Imaging Telescope)

Explanation: SUIT onboard Aditya-L1 is specifically designed to capture high-resolution images of the Sun's ultraviolet emissions. It provides valuable data on the dynamics and structure of the solar chromosphere and transition region, aiding in the study of solar activity.

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