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Question (21)

QN001821

Total solar eclipses are visible only from a narrow region because

(A) The Moon’s umbra is small on Earth
(B) The Sun is too far away
(C) Earth rotates rapidly
(D) Clouds block sunlight everywhere else

Correct Answer: A

Explanation:

The Moon’s dark shadow covers only a narrow area.

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Question (22)

QN001822

If the Moon is between the Sun and Earth but slightly above the straight line joining them, the result will most likely be

(A) Solar eclipse
(B) Lunar eclipse
(C) No eclipse
(D) Earthquake

Correct Answer: C

Explanation:

Proper alignment is necessary for eclipses.

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Question (23)

QN001823

Which sequence correctly represents the positions during a solar eclipse?

(A) Sun – Moon – Earth
(B) Earth – Moon – Sun
(C) Moon – Earth – Sun
(D) Sun – Earth – Moon

Correct Answer: A

Explanation:

The Moon lies between the Sun and Earth.

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Question (24)

QN001824

Which sequence correctly represents the positions during a lunar eclipse?

(A) Earth – Sun – Moon
(B) Sun – Earth – Moon
(C) Moon – Earth – Sun
(D) Sun – Moon – Earth

Correct Answer: B

Explanation:

Earth comes between the Sun and Moon.

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Question (25)

QN001825

A student in the penumbra of Earth’s shadow during a lunar eclipse will observe

(A) Total lunar eclipse
(B) Partial lunar eclipse
(C) No Moon visible ever again
(D) Total solar eclipse

Correct Answer: B

Explanation:

Penumbra produces a partial eclipse.

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Question (26)

QN001826

Which eclipse generally lasts longer?

(A) Total solar eclipse
(B) Lunar eclipse
(C) Partial solar eclipse only
(D) Annular solar eclipse only

Correct Answer: B

Explanation:

Lunar eclipses can last for several hours.

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Question (27)

QN001827

If the Earth had no atmosphere, the eclipsed Moon during a lunar eclipse would appear

(A) Bright blue
(B) Completely dark
(C) Green
(D) Extremely shiny white

Correct Answer: B

Explanation:

Without atmosphere, no light would bend onto the Moon.

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Question (28)

QN001828

Which scientist travelled to different places to study solar eclipses?

(A) Aryabhata
(B) C.V. Raman
(C) M.K. Vainu Bappu
(D) Homi Bhabha

Correct Answer: C

Explanation:

M.K. Vainu Bappu studied solar eclipses extensively.

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Question (29)

QN001829

A student uses ordinary sunglasses to observe a solar eclipse. This method is

(A) Completely safe
(B) Safer than eclipse goggles
(C) Unsafe for the eyes
(D) Recommended by scientists

Correct Answer: C

Explanation:

Ordinary sunglasses do not block harmful rays sufficiently.

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Question (30)

QN001830

During a total lunar eclipse, the Moon does not disappear completely because

(A) The Moon glows naturally
(B) Some sunlight bends through Earth’s atmosphere
(C) Earth’s shadow is transparent
(D) Stars illuminate the Moon

Correct Answer: B

Explanation:

Earth’s atmosphere bends sunlight onto the Moon.

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Question (21)

Total solar eclipses are visible only from a narrow region because

Explanation:

Link:

Question (22)

If the Moon is between the Sun and Earth but slightly above the straight line joining them, the result will most likely be

Explanation:

Link:

Question (23)

Which sequence correctly represents the positions during a solar eclipse?

Explanation:

Link:

Question (24)

Which sequence correctly represents the positions during a lunar eclipse?

Explanation:

Link:

Question (25)

A student in the penumbra of Earth’s shadow during a lunar eclipse will observe

Explanation:

Link:

Question (26)

Which eclipse generally lasts longer?

Explanation:

Link:

Question (27)

If the Earth had no atmosphere, the eclipsed Moon during a lunar eclipse would appear

Explanation:

Link:

Question (28)

Which scientist travelled to different places to study solar eclipses?

Explanation:

Link:

Question (29)

A student uses ordinary sunglasses to observe a solar eclipse. This method is

Explanation:

Link:

Question (30)

During a total lunar eclipse, the Moon does not disappear completely because

Explanation:

Link:

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