Advertisements
Advertisements
Question
Draw a ray diagram to show the formation of umbra alone.
Advertisements
Solution
Formation of umbra alone.
APPEARS IN
RELATED QUESTIONS
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 a penumbra on the screen.
What is penumbra?
What are the essential conditions for the formation of shadow?
What do we need in order to see a shadow?
What are the properties of shadow?
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 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.
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.
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 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.
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?
