Physics Solar System Based Questions With Solved Answers
Physics Sample Test IAS Practice Paper
1. How does the escape velocity of a body on earth depend on its mass m?
(A) m2
(B) m
(C) mO
(D) m -1
Ans:-C
2. The biggest planet of the solar system is—
(A) Mercury
(B) Jupiter
(C) Mars
(D) Venus
Ans:-B
3. What should be the minimum initial velocity in order to cross the gravitational field of the earth?
(A) 11.2 km/sec
(B) 112 km/sec
(C) 2.38 km/sec
(D) 112 metre/sec
Ans:-A
4. The orbital velocity of a satellite orbiting very close to earth depends on—
(A) The mass of the satellite
(B) The radius of the earth
(C) The radius of the orbit
(D) all of the above
Ans:-B
5. What is the periodic time of a geostationary satellite?
(A) 1 year
(B) 24 hours
(C) 28 days
(D) None of the above
Ans:-B
6. There is no atmosphere on the moon because—
(A) It is near to earth
(B) It revolves round the earth
(C) It gains light from the sun
(D) The escape velocity of the gaseous molecules here is less than their r.m.s. velocity
(B) None of the above
Ans:-D
7. The tail of the Halley’s Comet lies away from the sun because—
(A) While revolving round the sun Halley’s lighter part shifts away from the sun due to the centrifugal force
(B) The lighter part of Halley is attracted by some star situated in the direction of the tail
Thiruvananthapuram
(C) The radiation emitted by the sun exerts a radial pressure on Halley
(D) Halley’s tail always point in the same direction
Ans:-C
8. The orbital velocity of Jupiter is—
(A) greater than that of earth
(B) less than that of earth
(C) Equal to that of earth
(D) Zero
Ans:-B
9. From where has PSLVD-3 been recently launched in India?
(A) Thumba
(B) Sriharikota
(C) Hasan
(D) Kaiga
Ans:-B
10. From where was the first Indian Satellite Launch Vehicle (S.L.V.) was projected?
(A) Balasore Range
(B) Sri Harikota Range
(C) Thiruvananthapuram
(D) Ahmedabad
Ans:-B
11. Where is the ISRO headquarter situated?
(A) New Delhi
(B) Sri Harikota
(C) Thiruvananthapuram
(D) Bangalore
Ans:-D
12. The celestial bodies fallen on earth half- burnt are called—
(A) Meteors
(B) Meteorites
(C) Asteroids
(D) Satellites
Ans:-B
13. INSAT-1D was launched from—
(A) Sri Harikota in 1990
(B) U.S.A. in 1990
(C) Soviet Union in 1991
(D) Kouru in 1988
Ans:-B
14. The first man to go into space is—
(A) Neil Armstrong
(B) Yuri Gagarin
(C) Alexi Leonev
(D) Edward White
Ans:-B
15. The launching station whence the Aryabhatta was projected belongs to which of the following countries?
(A) America
(B) India
(C) Soviet Union
(D) Unknown station
Ans:-C
16. Which of the following was the first satellite of India?
(A) Bhaskar
(B) Rohini
(C) Aryabhatta
(D) Apple
Ans:-C
17. Which of the following st4ements in relation to the escape velocity on earth is not correct?
1. It does not depend on the mass of the body
2. It depends on the mass of the body
3. Its value is found out by the formula Ve = √2gRe
4. Its value is 11.2 km/sec
Select the answer from the following codes-
(A)1
(B) 2
(C) 3 and 4
(D) 4
Ans:-B
18. What is the approximate height of a geostationary satellite from the earth surface?
(A) 3600 km
(B) 36,000 km
(C) 360 km
(D) None of the above
Ans:-B
19. What is the minimum energy required for a 2 kg mass in order to flee off the
Gravitational pull of the earth?
(A) 9 joule
(B) 18 joule
(C) 1.25 x 108 joule
(D) 2.2 x 108 joule
Ans:-C
20. In which year was the satellite Aryabhatta launched?
(A) 1973
(B) 1975
(C) 1977
(D) 1980
Ans:-B
21. The first spaceman to keep pace on the moon is—
(A) Yuri Gagarin
(B) Michel Collins
(C) Edwin Aldrin
(D) Neil Armstrong
Ans:-D
22. The first man to land on the moon belongs to which country?
(A) Soviet Union
(B) America
(C) France
(D) England
Ans:-B
23. The galaxian year of the n is—
(A) 120 lac years
(B) 2400 lac years
(c) 240 lac years
(D) 1200 lac years
Ans:-C
24. What colour does the sky show to a spaceman?
(A) Blue
(B) Red
(C) Yellow
(D) Black
Ans:-D
25. Where is the Vikram Sarabhai Space Centre situated?
(A) Ahmedabad
(B) Sri Harikota
(C) Thiruvananthapuram
(D) Balasore
Ans:-C
26. On which date and at what time has PSLVD-3 been successfully launched in
India?
(A) 21-396; 1023 A.M.
(B) 22-3-96; 10.23 P.M.
(C) 20-3-96; 12.00 P.M.
(D) 23-3-96; 1.00 P.M.
Ans:-A
27. Ceres is—
(A) A satellite
(B) An asteroid
(C) A planet
(D) a comet
Ans:-B
28. If the orbit of a satellite happens to be elliptical then the plane of the ellipse—
(A) Sometimes passes through the centre of the earth
(B) Does not pass through the centre of the
(C) Passes through the centre of the earth
(D) None of the above
Ans:-C
29. There occurs an explosion on the moon. You will hear the sound caused by it on earth after—
(A) 10 minutes
(B) 2 hours and 18 minutes
(C) 3.7 minutes
(D) You will hear no sound at all
Ans:-D
30. A corked bottle filled with water at 30 °C is brought to moon. If the bottle is uncorked on the surface of the moon, then—
(A) The water will freeze
(B) The water will decompose into hydrogen and oxygen
(C) The water will boil
(D) There will be no effect on water.
Ans:-C
31. A satellite orbiting round the earth does not fall below because the gravitational pull of the earth—
(A) Is balanced by the moon’s attraction
(B) Is annulled at such a large distance
(C) Is balanced by the viscous force caused by atmosphere
(D) Produces the acceleration required for its motion on the curved path
Ans:-D
32. The rate of expansion of the universe is being measured with the rate of receding of which of the following?
(A) galaxy
(B) Milky ways
(C) Solar system
(D) Air particles
Ans:-A
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