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Universe JEE physics - Universe

CBSE - STD 12 Science - JEE physics (CBSE - English Medium). 76 questions in this chapter.

Question types

Universe question types

76 questions across 2 question groups — pick any mix to generate a JEE physics paper with step-by-step answer keys.

76
Questions
2
Question groups
5
Question types
Sample Questions

Universe questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 2Assertion & Reason1 Mark
Assertion : A pulsor is a source of radio waves which change in terms of intensity at regular interval of time
Reason : A pulsor is a rotating neutron star
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Q 4Assertion & Reason1 Mark
Assertion : The value of Hubble's constant is $16 km / s$
Reason : Hubble's constant means that a galaxy at 1 million light years away is receding at the rate of $16 km / s$.
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Q 6MCQ1 Mark
Meteors are
  • A
    Small stars
  • ✓
    Burnt pieces of comets that fall on earth
  • C
    Comets without tails
  • D
    None of these

Answer: B.

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Q 7MCQ1 Mark
According to the pulsating theory the expansion and contraction of the universe repeats after every
  • A
    $11$ years
  • B
    $8$ billion years
  • C
    $8$ million years
  • ✓
    $80$ billion years

Answer: D.

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Q 8MCQ1 Mark
Two stars $P$ and $Q$ are observed at night. Star $P$ appears reddish while, star $Q$ is white. From this we conclude
  • ✓
    Temperature of $Q$ is higher than that of $P$
  • B
    Temperature of $Q$ is lower than that of $P$
  • C
    Star $Q$ is at the same distance at that of $\operatorname{star} P$
  • D
    Star $P$ is farther than star $Q$

Answer: A.

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Q 9MCQ1 Mark
How does the red shift confirms that the universe is expanding
  • A
    Due to Wien's law
  • B
    Due to Stefan's law
  • C
    Due to Kirchhoff's law
  • ✓
    Due to Doppler's effect

Answer: D.

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Q 10MCQ1 Mark
The tail of the comet is due to
  • ✓
    Vaporisation of water on the comet
  • B
    Sublimation of vapour in the comet
  • C
    Cooling of water in the comet
  • D
    Vaporisation of heat in the comet

Answer: A.

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