Consider for Chandrayaan-3: 1. Aimed to demonstrate safe and soft-landing technology near the lunar south polar region. 2. Rover was designed for long-term operation for multiple lunar days without dependence on solar energy. Which statements are correct?
Anonymous Quiz
55%
Only 1
3%
Only 2
39%
Both 1 and 2
2%
Neither 1 nor 2
1.Chandrayaan-1: Detection of water/hydroxyl on lunar surface. 2.Chandrayaan-2: Successful soft landing of lander near lunar south pole. 3.Chandrayaan-3: Demonstration of safe and soft-landing capability on the Moon. Which pairs are correctly matched?
Anonymous Quiz
8%
1 and 2 only
16%
2 and 3 only
56%
1 and 3 only
19%
1, 2 and 3
1. Dispersion of FRB signals varies with the density of intervening matter. 2. Repeating FRBs necessarily originate from a different class of sources than non-repeating FRBs. 3. FRBs are extremely short-duration emissions. Which are correct?
Anonymous Quiz
35%
1 and 2 only
14%
2 and 3 only
45%
1 and 3 only
6%
1, 2 and 3
1. Polarisation measurements of FRBs can reveal magnetic environments near their source. 2. FRBs with higher dispersion measures are always farther from Earth. 3. Multi-wavelength follow-ups may help identify FRB environments. Which are correct?
Anonymous Quiz
6%
1 and 2 only
15%
2 and 3 only
67%
1 and 3 only
12%
1, 2 and 3
What is correct for the Hubble Space Telescope? 1. Its location above Earth’s atmosphere reduces atmospheric distortion in observations. 2. It operates primarily in low Earth orbit. 3. Its observations are limited only to the visible spectrum.
Anonymous Quiz
74%
1 and 2 only
9%
2 and 3 only
9%
1 and 3 only
7%
1, 2 and 3
For Hubble Space Telescope, what is correct: 1. Servicing missions upgrade its instruments & extend operational life. 2. Its observations helped estimate Universe’s expansion rate. 3. Its mirror system removes the need for image processing & calibration.
Anonymous Quiz
10%
1 only
45%
1 and 2 only
15%
2 and 3 only
29%
1, 2 and 3
👍1
What is/are correct for gravitational waves? 1. They arise from accelerated masses with asymmetric motion. 2. They can propagate through vacuum without requiring a medium. 3. Their detection depends on measuring extremely small distortions in space-time.
Anonymous Quiz
22%
1 and 2 only
21%
2 and 3 only
22%
1 and 3 only
35%
1, 2 and 3
Which are correct for gravitational waves? 1. Interferometers measure path-length changes caused by passing waves. 2. Merger gravitational waves may reveal extreme gravity environments. 3. Gravitational waves are heavily absorbed by interstellar matter.
Anonymous Quiz
47%
1 and 2 only
12%
2 and 3 only
12%
1 and 3 only
29%
1, 2 and 3
Forwarded from PMF IAS Official (Rajashree@PMFIAS)
IMPORTANT NOTICE
Dear Aspirants,
It has come to our notice that our printer missed sticking the scratch codes in the first 500 copies of the PMF IAS Science & Technology book. These are genuine copies and not fake or duplicate editions.
We regret the inconvenience caused. If you have received such a copy, please write to us at support@pmfias.com. Our support team will verify the issue and provide you with a fresh code.
Thank you for your understanding and support.
Team PMF IAS
❤2🗿1
1. GSAT-7: Defence communication 2. GSAT-6A: Mobile communication services 3. GSAT-24: Dedicated communication support for DTH services Which of the pairs are correctly matched?
Anonymous Quiz
20%
1 and 2 only
18%
2 and 3 only
18%
1 and 3 only
44%
1, 2 and 3
1. LVM3 can place heavier payloads into GTO than earlier ISRO launch vehicles. 2. LVM3 uses a cryogenic upper stage for its propulsion system. 3. LVM3 is only for uncrewed launches and cannot support human spaceflight. Which statements are correct?
Anonymous Quiz
76%
1 and 2 only
10%
2 and 3 only
4%
1 and 3 only
11%
1, 2 and 3
1. GSLV places satellites directly into geostationary orbit without adjustments. 2. GSLV uses a cryogenic upper stage for efficient final-phase launch. 3. Cryogenic propulsion offers higher specific impulse than many liquid propellants. What is correct?
Anonymous Quiz
10%
1 and 2 only
59%
2 and 3 only
11%
1 and 3 only
20%
1, 2 and 3
👍1