mgu.ac.in Astronomy And Astrophysics Question Paper Model : Mahatma Gandhi University

Name of the University : Mahatma Gandhi University
Degree : B.Sc. Fifth Semester
Name Of The Subject : Physics – Astronomy And Astrophysics
Document type : Model Question Paper

Website : mgu.ac.in
Download Model Question Papers : https://www.pdfquestion.in/uploads/7521-Astronomy%20and%20astrophysics.pdf

MGU Astronomy & Astrophysics Sample Paper

Part A : (Objective type): Answer all questions.(1 mark each)

Related : Mahatma Gandhi University B.Sc Biotechnology Question Paper Model : www.pdfquestion.in/7519.html

Physics

1. The sun spots are generally —————in shape.
2. The brightest stars appearing to form groups are called ————–
3. Meteors are called —————————-
4. Present age of the Universe is estimated to be equal to —————————–
5. The invisible dark matter in the universe spread to an extent of ——————————
6. The nearest star from the earth is ————————
7. Light from the sun takes —————minutes to reach earth.
8. Corona is the extensive halo seen around the sun at the time of————————
9. ————————is the founder of “Big Bang theory” describing the origin of universe.
10. The solid dust in the dust cloud, because of their gravitational instabilities forms into —————– of diameter 1 to 5kms.

Part B : (Short Answer Questions): Answer any eight questions (2 Marks Each)
11. Define Hubble distance.
12. What do you mean by Singularity?
13. Explain Chandrasekhar limit.
14. What are Asteriods?
15. Define Luminosity of star.
16. What are Solar flares?
17. Write down the nuclear chain reactions involved in CNO cycle.
18. Explain Microwave background radiation.
19. Briefly explain supernovae.
20. Explain secular parallax.
21. What are constellations?
22. State the aspect of sky at the equator.

Part C : (Short Essays/Problems): Answer any six questions(4 Marks Each)
23. What is Schwarzschild radius of black hole? Determine the Schwarzschild radius of with 5 solar mass.
24. What do you mean by geocentric and heliocentric theory of the revolution?
25. Distinguish between apparent and absolute magnitude of star. The apparent magnitudes of Alpha centauri and Betelgeuse are -0.10 and +0.80 respectively. Compare the brightness of these stars.
26. What is H-R diagram? Explain its main features.
27. Calculate the surface temperature of the sun from the following data. Radius of the sun=6.96×108m, Mean distance of the sun and the earth=1.497×1011m, solar constant=1400 Jm-2s-1, Stefan’s constant=5.7×10-8 Wm-2K-4
28. The mass of sun is 2 x 1030 kg and its radius is 7 x 108m. Calculate the approximate gravitational red shift to light of wavelength 540 nm emitted by sun.
29. Determine the energy emitted per second from the surface of a star with temperature 8500 K and radius 105.
30. A certain observatory on the earth receives 600 nm light from a white dwarf whose radius is 6.4 x 106 m and mass is that of sun. Calculate the actual wavelength emitted.
31. The radius of a white dwarf is 105 km and solar mass is 2 x 1030 kg. Calculate the density of the star.

Part D : (Essays): Answer any two questions(15 Marks Each)
32. What are Galaxies? Explain the origin and evolution of Galaxies. How are they classified?
33. Tabulate the sequence of incidents, features and properties of the universe, since its origin from the age of zero second, based on Big Bang theory.
34. Explain the Celestial sphere. Describe the motions of earth and stars in the celestial sphere.
35. Give an account on the internal structure and atmosphere of sun.

Creative Writing (Theory)

Time : 3 Hrs
Total Weight: 25
Part A :
Answer the Questions in one word, phrase or sentence.
I 1. What is a Ballad?
2. What is a curtain raiser?
3. From which language did the term ‘elegy’ originate?
4. How is a fable different from a parable?

II  5. What is a farce? 6. Give two examples for Hyperbole.
7. What is Science Fiction?
8. Who are the ancient writers of tragedy?

III Complete the dialogue with appropriate phrases/sentences:
Rajiv: Hai, Suresh. How are you?
(9)………………………………….?
Suresh: (10)………………………….. I’m going to the market.
Rajiv: How was your annual exam?
Suresh:  (11)…………………………. I think will I pass in first division.
Rajiv: (12)……………………………You have always been good in studies.

IV Write the meaning of the proverbs in one sentence:
13. Practice Makes Perfection
14. Pride Goes Before a Fall
15. Slow and Steady Wins the Race
16. Where there is a will, there is a way (4 x 1 = 4)

Part B :
Short Answer Questions.
Weight 1 each.
Answer Any Five of the following.
17. Develop the headline ‘India-Pak Talks in Progress’ to a news report.
18. Develop the headline ‘Militants Gun Down 20 Villagers’ to a news report.
19. Describe the physical appearance of your favourite hero.
20. Describe the physical appearance of an old lady.
21. Write about your personal ambition.
22. Write a short poem on ‘Friendship’ (Four Lines)
23. What is an adjective? Give two examples.
24. What is a noun? Give two examples.