Penumbra
Trending Questions
Q.
What is the abstract noun of dark?
Q. Why is it that the birds flying in the sky do not cast their shadow on the earth?
Q.
The lighter region of a shadow is called:
Penumbra
Umbra
Eclipse
Antumbra
Q. Why is it that the birds flying in the sky do not cast their shadow on the earth?
Q.
When do we hit light on a coloured water bottle filled with water it forms coloured shadow why
Q.
Kites flying high in the sky do not cast their shadows on the earth.
- True
- False
Q.
What are the types of lunar eclipse ?
Q.
What is the less shaded outer region of a shadow called
penumbra
sub-umbra
antumbra
umbra
Q. Umbra and penumbra are seen in:
- rainbows
- tides
- shadows
- sunlight
Q.
Light does not need ___ to travel.
Q. Give the reasons for the following : Birds, while, flying high, do not cast its shadow on earth
Q. In shadow formation, umbra is a region of -
- complete darkness
- partial darkness
- partial brightness
- complete brightness
Q.
If the moon is in the penumbra region of the earth's shadow then total lunar eclipse occurs.
False
True
Q. As shown in the figure, a light source is placed in a dark room. A glass block is placed between the wooden sheet (having a triangular hole) and the screen. Identify the correct projection of light on the screen.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/853813/original_135_-_1.PNG)
Q. A region of total darkness is called umbra.
- True
- False
Q. The darkest portion of a shadow is called the _____.
Q.
State whether true or false.
The complete dark portion of a shadow is called antumbra.- True
- False
Q. A partial lunar eclipse occurs when the Moon is located _____ region.
- outside earth‘s shadow
- in both umbra and penumbra
- in only umbra
- in only penumbra