A shadow is formed when
(a) light from a luminous object reaches our eyes.
(b) light from a luminous object reaches our eyes after reflection.
(c) light from a luminous object is prevented from reaching our eyes by another object.
(d) light from a luminous object reaches our eyes after passing through a transparent object.

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Solution

(c) light from a luminous object is prevented from reaching our eyes by another object.

A shadow is formed when light from a source is blocked by an opaque object and the light does not reach our eyes.

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Similar questions

Choose the correct statements:

Statement 1: We see objects when light emitted from luminous objects enters our eyes.

Statement 2: We see objects when light reflected from the non-luminous objects enters our eyes.

Statement 3: Eyes alone cannot see an object.

Statement 4: Eyes emit light rays in all direction.

Question 2

We can see a non-luminous object when the light
(a) emitted by the object falls on the eye
(b) is reflected from the object towards our eye
(c) completely passes through the object
(d) gets completely absorbed by the object

Q. Choose the correct answer regarding luminous objects:

Statement 1: Objects which emit light on their own are known as luminous objects.
Statement 2: Luminous objects are responsible for our vision.
Statement 3: Candle and earth are examples of luminous objects.
Statement 4: Luminous objects emit their own light and also reflects the light falling on them from other light sources.

As per the concept, we are able to see because the light gets reflected from the object and reach our eyes.but what when the light gets reflected but don't reach our eyes?

Choose the correct statements:

Statement 1: We see objects when light emitted from the objects enter our eyes.

Statement 2: We see objects when light reflected from the objects enter our eyes.

Statement 3: Eyes alone cannot see an object.

Statement 4: Eyes emit light rays in all direction.

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(c) light from a luminous object is prevented from reaching our eyes by another object. A shadow is formed when light from a source is blocked by an opaque object and the light does not reach our eyes.

(c) light from a luminous object is prevented from reaching our eyes by another object.

A shadow is formed when light from a source is blocked by an opaque object and the light does not reach our eyes.