Tag: elementary ideas of astronomy

Questions Related to elementary ideas of astronomy

A lunar eclipse can occur only on a -

physics effects of light eclipses elementary ideas of astronomy shadow formation and optical medium

  1. new moon day

  2. full moon night

  3. half moon day

  4. none of these

Show answer
Correct Option: B
Explanation:

A lunar eclipse can occur only on a full moon light.

Ans: full moon day

Which eclipse is known when the Moon travels through the faint penumbral portion of the Earths shadow.?

physics effects of light eclipses elementary ideas of astronomy shadow formation and optical medium

  1. Total

  2. Partial

  3. Penumbral

  4. Hybrid

Show answer
Correct Option: C
Explanation:

Earth cast a shadow on the Moon in a lunar eclipse. Earth's shadow are of 2 types: umbra and penumbra. The darkest or the total shadow is the umbra while the partial shadow is the penumbra. Penumbral eclipse happens when Moon passes through the penumbra.

From below which are the types of solar eclipses?

physics effects of light eclipses elementary ideas of astronomy shadow formation and optical medium

  1. Total solar eclipse

  2. Partial Solar eclipse

  3. Annular solar eclipse

  4. All of above

Show answer
Correct Option: D
Explanation:

Solar eclipse are of three types:

1,  Partial solar eclipse. 
2. Annular solar eclipse.
3. Total solar eclipse.

Which eclipse is a rare form of eclipse which changes from annular to total solar eclipse along its path?

physics effects of light eclipses elementary ideas of astronomy shadow formation and optical medium

  1. Partial

  2. Total

  3. Annular

  4. Hybrid

Show answer
Correct Option: D
Explanation:

Hybrid eclipse are very rare and comes once in 159 years. A shift betwwe the total and annular eclipse takes place in hybrid eclipse.

Fill in the blank:

_________ eclipse occurs on a new moon day.

physics effects of light eclipses elementary ideas of astronomy shadow formation and optical medium

  1. Solar

  2. Lunar

  3. Either A or B

  4. None of the above

Show answer
Correct Option: A
Explanation:

Solar eclipse always occurs on a new moon day.

Lunar eclipse always occur on a full moon day.

Fill in the blank:

________ eclipse occurs on a full moon day.

physics effects of light eclipses elementary ideas of astronomy shadow formation and optical medium

  1. Solar

  2. Lunar

  3. Neither A nor B

  4. Both A and B

Show answer
Correct Option: B
Explanation:

Lunar eclipse always occur on a full moon day.

Solar eclipse always occur on a new moon day.

When does lunar eclipse happen?

physics effects of light eclipses elementary ideas of astronomy shadow formation and optical medium

  1. only on full moon

  2. only on new moon

  3. only on quarter moon

  4. none

Show answer
Correct Option: A
Explanation:

Lunar eclipse occurs on full moon and solar on new moon day.

Lunar eclipses are of 3 types:
1. Total
2. Partial
3. Penumbral