Which is the primary payload of Aditya-L1, built to study the corona of the Sun by blocking its bright disc?
- A.SUIT
- B.VELC
- C.HEL1OS
- D.ASPEX
Correct answer
Explanation
The correct answer is B, VELC. The Visible Emission Line Coronagraph is the largest and the principal instrument aboard Aditya-L1. A coronagraph creates an artificial eclipse inside the instrument by covering the bright disc of the Sun, so that the faint outer atmosphere called the corona becomes visible. VELC can observe the corona close to the solar surface and study how coronal mass ejections begin, which is the key to understanding space weather.
Option A, SUIT, is the Solar Ultraviolet Imaging Telescope, which photographs the Sun in ultraviolet light and studies the layers below the corona. Option C, HEL1OS, is the high energy X-ray spectrometer that records the hard X-rays of solar flares. Option D, ASPEX, is the particle experiment that samples the solar wind arriving at the spacecraft. All four are genuine payloads of the mission, so the question turns on which one is the chief instrument.
Read the full article: Aditya-L1 and Space Science Missions: Notes and MCQs
Practice Questions
View allIn which year did Captain Rakesh Sharma travel to space in a Soviet space programme?
- A.1981
- B.1982
- C.1983
- D.1984
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Wing Commander Rakesh Sharma flew in April 1984 aboard the Soviet spacecraft Soyuz T-11 as part of a joint programme between the Soviet Union and India, and spent about eight days aboard the Salyut 7 space station.
Read the full explanation →Which of the followings has been dubbed as India maiden human spaceflight programme?
- A.Mangalyaan II
- B.Gaganyaan
- C.Chandrayaan II
- D.Aditya L-1
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Gaganyaan is the programme under which the Indian Space Research Organisation is preparing to send Indian astronauts into a low orbit around the Earth in a crew module of its own and bring them back safely.
Read the full explanation →The first pico satellite of India is:
- A.INSAT
- B.STUDSAT
- C.GSAT-4
- D.ANUSAT
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STUDSAT, short for Student Satellite, was the first pico satellite built in India. A pico satellite is one that weighs under about one kilogram, and STUDSAT weighed less than that.
Read the full explanation →What is the primary objective of the Chandra Surface Thermophysical Experiment (ChaSTE) payload?
- A.To assess the Moon geological composition
- B.To measure the vertical temperature profile of the lunar regolith
- C.To measure the Moon atmospheric pressure
- D.To study the Moon magnetic field
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ChaSTE was carried on the Vikram lander of Chandrayaan-3. It has a probe fitted with a set of temperature sensors, which was pushed into the lunar soil to a depth of about ten centimetres near the south polar region.
Read the full explanation →In the year 2021, DRDO launched which satellite by PSLV-C51 to enhance India surveillance capability in the Indian Ocean Region (IOR)?
- A.Satish Dhawan Satellite
- B.Sindhu Netra Satellite
- C.Sindhu Durga Satellite
- D.Sri Shakti Satellite
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Sindhu Netra was developed by the Defence Research and Development Organisation and was placed in orbit in February 2021 by the PSLV-C51 flight, the same flight whose main payload was the Amazonia-1 satellite of Brazil.
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