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प्रश्न
A torch is placed at two different positions A and B, one by one, as shown in the following figure.

The shape of the shadow obtained in two positions is shown in the following figure.

Match the position of the torch and shape of the shadow of the ball.
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उत्तर
A → a; B → b
As the position of torch changes, we can observe the change in shape of shadow.
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संबंधित प्रश्न
Fill in the blank.
The darkest portion of a shadow is called the ................
Fill in the blank.
The less dark portion of a shadow is called the .................
Select the correct alternative.
Umbra is a region of
Select the correct alternative.
Penumbra is a region of
State two differences between an umbra and a penumbra.
In the following diagram, draw rays to form umbra on the screen.

Why is it that the birds flying in the sky do not cast their shadow on the earth?
Tick the correct answer.
Umbra is a region of
What is penumbra?
When does a shadow form?
What are the essential conditions for the formation of shadow?
How does the colour of an opaque object affect the colour of the shadow?
What are the parts of shadow?
What are the properties of shadow?
Which of the following can never form a circular shadow?
Three torches A, B and C shown in the following figure are switched on one by one. The light from which of the torches will not form a shadow of the ball on the screen.

On a sunny day, does a bird or an aeroplane flying high in the sky cast its shadow on the ground? Under what circumstances can we see their shadow on the ground?
