Class 12 Physics · Chapter 1 · Test 3
Stellar Evolution
35 MCQs
35 questions · 30 min · 35 marks
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Sample questions
The first 5 of 35. Try each one, then tap to see the answer.
Question 1
Stellar evolution deals with:
- AThe distance between stars
- BHow a star changes over time
- CThe colour of stars only
- DThe motion of planets
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Answer: B
Stellar evolution deals with how a star changes over time.
Question 2
The lifetime of a star mainly depends on its:
- AColour
- BDistance from Earth
- CMass
- DDirection of motion
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Answer: C
The life of a star depends on its mass.
Question 3
All stars are formed from clouds of gas and dust called:
- ANebulae or molecular clouds
- BComets
- CAsteroid belts
- DBlack holes
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Answer: A
Stars form from nebulae or molecular clouds.
Question 4
A contracting cloud of gas that has not yet become a stable star is called a:
- APulsar
- BWhite dwarf
- CRed giant
- DProto-star
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Answer: D
The contracting cloud is called a proto-star.
Question 5
As a gas cloud contracts its density and temperature increase because:
- AParticles lose all energy
- BThe kinetic energy of particles rises
- CThe cloud absorbs only light
- DMass is destroyed
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Answer: B
Contraction raises the kinetic energy of particles and since K.E. is proportional to T the temperature rises.
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