Question
With reference to `Astrosat', the astronomical observatory launched by India, which of the following statements is/are correct?
1. Other than USA and Russia, India is the only country to have launched a similar observatory into space.
2. Astrosat is a 2000 kg satellite placed in an orbit at 1650 km above the surface of the Earth.
Select the correct answer using the code given below.
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Answer:
D
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Explanation:
Statement 1 is incorrect. Several countries, including the United States, Japan and Russia, have launched similar astronomical observatories into space. India's Astrosat is not the only one.
Statement 2 is also incorrect. Astrosat is a 1,513 kg satellite and it operates in a low-Earth orbit at an altitude of about 650 km, not 1650 km.