Universe - Rajasthan Board (RBSE) STD 12 Science Physics Questions

72

Questions

1

Question groups

5

Question types

M.C.Q (1 Marks)

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.

The difference in the lengths of a mean solar day and a sidereal day is about

Answer: B.

Fraunhofer lines of the solar system is an example of

Answer: C.

Assertion : Moon is seen as it partly reflects the sun light falling on it
Reason : Moon is a satellite of earth. It does not emit light of its own

✓
If both assertion and reason are true and the reason is the correct explanation of the assertion.
B
If both assertion and reason are true but reason is not the correct explanation of the assertion.
C
If assertion is true but reason is false.
D
If the assertion and reason both are false.

Answer: A.

Assertion : Sun is at the galactic centre C of the milky way
Reason : All planets of solar system revolve around the sun.

A
If both assertion and reason are true and the reason is the correct explanation of the assertion.
B
If both assertion and reason are true but reason is not the correct explanation of the assertion.
C
If assertion is true but reason is false.
✓
If assertion is false but reason is true.

Answer: D.

Assertion : Red shift confirms that the universe is expanding
Reason : Wavelength of red light is maximum in the visible region

A
If both assertion and reason are true and the reason is the correct explanation of the assertion.
✓
If both assertion and reason are true but reason is not the correct explanation of the assertion.
C
If assertion is true but reason is false.
D
If the assertion and reason both are false.

Answer: B.