Tag: effects of light

Quizzes (3) Questions (91)

Questions Related to effects of light

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

State whether true or false.
Lunar eclipse occurs in every full moon night.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Lunar eclipse can occur only on a full moon night. But they do not happen every full moon night because Earth's orbit around the sun is not in the same plane as the moon's orbit around the earth. Eclipse occur only if the the sun, the earth and the moon come to lie in a straight line.

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

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

  1. Total

  2. Partial

  3. Penumbral

  4. Hybrid
Reveal answer Fill a bubble to check yourself
C Correct answer
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.