Umbra

Q.

Why our shadows in the morning and evening are large as compared to the noon?

Q.

What are the two regions of a shadow called?

1. Umbra

2. Penumbra

3. Umbrella

4. None of these

Q. A region of darkness which is formed when the path of light is blocked is called ___________.

1. shadow
2. darkness
3. translucent
4. luminosity

Q.

Why are the shadows formed in the morning and evening bigger than the shadows formed in the noon? [3 MARKS]

Q. What is the fully shaded inner region or the darker region of a shadow called ___ .

Q. Statement I: Umbra is a region of complete darkness.
Statement II: Penumbra is a region of partial brightness.

1. Only statement II is true.
2. Both the statements are false.
3. Both the statements are true.
4. Only statement I is true.

Q.

_________is the darker region of the shadow.

Q. The partially dark portion of a shadow is called -

1. penumbra
2. eclipse
3. none of these
4. umbra

Q. The completely dark portion of a shadow is called -

1. penumbra
2. opaque
3. umbra
4. none of these

Q.

A region of darkness, which is formed when the path of light is blocked by an opaque body is called___

Q. What are the two regions of a shadow?

1. Umbra
2. Penumbra
3. Umbrella
4. None of them

Q.

___ shadow is called the penumbra.

Q. Draw a ray diagram to show the formation of umbra alone.

Q. The darkest part of the shadow is called the .

1. orbit
2. penumbra
3. umbra
4. axis

Q. The dark region which is formed when the path of light is blocked by an opaque object is called ___________.

1. ring
2. shadow
3. image
4. mirage

Q. The less dark portion of a shadow is called the _____.

Q.

Umbra is the ___ portion of the shadow.

Q.

The darkest part of the moon's shadow is called the

1. Penumbra

2. Orbit

3. Umbra

4. Axis

Q.

The shadow formed due to a point source of light has_____.

1. only umbra region

2. only penumbra region

3. both umbra and penumbra regions

4. depends on the distance of the source from the obstacle

Q.

The fully shaded region or the darker region of a shadow is called_______

1. Penumbra

2. Sub umbra

3. Umbra

4. Ultraumbra