Advertisements
Advertisements
प्रश्न
Draw a ray diagram to show the formation of umbra and penumbra both. Label the parts umbra and penumbra in your diagram.
Advertisements
उत्तर
If you move the screen away from the object, the shadow increases in size. Formation of umbra and penumbra both.
APPEARS IN
संबंधित प्रश्न
Select the correct alternative.
Penumbra is a region of
What is a shadow? Give a reason for its formation.
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?
State two differences between an umbra and a penumbra.
Draw a ray diagram to show the formation of umbra alone.
State the conditions when only the penumbra of an opaque object is obtained on the screen.
What is shadow?
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?
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?
What is a shadow? What things are necessary for the formation of a shadow?
______ is always against, opposite side of light source.
The ______ is the darkest part of a shadow.
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?
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?
