How will you convert a glass sheet into a translucent sheet? - Science

Answer in Brief

How does the colour of an opaque object affect the colour of the shadow?



 The colour of an opaque object does not affect the colour of the shadow.

Concept: Shadow
  Is there an error in this question or solution?


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

Draw a ray diagram to show the formation of the shadow of an opaque object by a point source of light. How is the size of shadow affected if the screen is moved away from the object?

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 umbra on the screen.

State the conditions when only the penumbra of an opaque object is obtained on the screen.

Why is it that the birds flying in the sky do not cast their shadow on the earth?

Answer the following.

How is a shadow formed? Write the conditions required for a shadow to form.

When does a shadow form?

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 parts of shadow?

What are the properties of shadow?

What is a shadow? What things are necessary for the formation of a shadow?

Rearrange the boxes given below to make a sentence that helps us understand opaque objects.

O W S A K E O P A Q U E  O B J E T T  S M
S H A D          

______ is always against, opposite side of light source.

The ______ is the darkest part of a shadow.

The lighter shade of shadow is the ______.

Which of the following can never form a circular shadow?

Three torches A, B, and C shown in Fig. 11.7 are switched on one by one. The light from which of the torches will not form a shadow of the ball on the screen.

Correct the following statements.

  1. The color of the shadow of an object depends on the color of the object.
  2. Transparent objects allow light to pass through them partially.

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?

A torch is placed at two different positions A and B, one by one, as shown in Fig. 11.9.

The shape of the shadow obtained in two positions is shown in Fig. 11.10

Match the position of the torch and shape of the shadow of the ball.

Three identical towels of red, blue and green colour are hanging on a clothes line in the sun. What would be the colour of shadows of these towels?

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


      Forgot password?
Use app×