Current Affairs Question - 19 December 2022
Science & Technology
James Webb Space Telescope (JWST)
Consider the following statements:
- Recently, the James Webb Space Telescope (JWST) provided unprecedented details of the atmosphere of a distant exoplanet, WASP-39 b.
- It is a ‘hot Saturn’ orbiting a star some 1000 light-years away.
- One of the key observations is the first detection in an exoplanet atmosphere of sulfur dioxide (SO2), a molecule produced from chemical reactions triggered by high-energy light from the planet’s parent star.
Which of the above statement(s) is/are true?
| A |
1 and 2
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|
| B |
2 and 3
|
|
| C |
1 and 3
|
|
| D |
All of the above
|
|
Science & Technology
Photonic Crystal
Consider the following statements:
- Recently, researchers from the Centre for Nano and Soft Sciences (CeNS) have developed soft tunable photonic crystal with enhanced thermal stability and optical purity.
- The crystal reflects vivid colours in the visible spectrum and has potential applications in making more durable and better reflective displays and laser devices.
- Photonic crystals are optical nanostructures in which the refractive index changes periodically.
Which of the above statement(s) is/are true?
| A |
1 and 2
|
|
| B |
2 and 3
|
|
| C |
1 and 3
|
|
| D |
All of the above
|
|
