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प्रश्न
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?
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उत्तर
Even on a sunny day, a bird or an aeroplane flying high in the sky does not cast its shadow on the ground.
We can see their shadow on the ground only if they are flying very close to the ground. In this case, ground acts as screen.
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संबंधित प्रश्न
Fill in the blank.
The less dark portion of a shadow is called the .................
What is a shadow? Give a reason for its formation.
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Draw a ray diagram to show the formation of umbra alone.
Draw a ray diagram to show the formation of umbra and penumbra both. Label the parts umbra and penumbra in your diagram.
In the following diagram, draw rays to form a penumbra on the screen.
State the conditions when only the penumbra of an opaque object is obtained on the screen.
What is shadow?
When does a shadow form?
How does the colour of an opaque object affect the colour of the shadow?
What do we need in order to see a shadow?
Sivarajan placed a meter stick in the playground at 7.00 am in the morning. How will the shadow of the stick at noon look in comparison to the one in the morning
What are the properties of shadow?
The ______ is the darkest part of a shadow.
Which of the following can never form a circular shadow?
Correct the following statements.
- The colour of the shadow of an object depends on its colour of the object.
- Transparent objects allow light to pass through them partially.
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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.
A football match is being played at night in a stadium with flood lights ON. You can see the shadow of a football kept at the ground but cannot see its shadow when it is kicked high in the air. Explain.
