Advertisements
Advertisements
प्रश्न
Draw a ray diagram to show the formation of umbra alone.
Advertisements
उत्तर
Formation of umbra alone.
APPEARS IN
संबंधित प्रश्न
Fill in the blank.
The less dark portion of a shadow is called the .................
Select the correct alternative.
Umbra 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?
In the following diagram, draw rays to form a penumbra on the screen.
Tick the correct answer.
Umbra is a region of
What is shadow?
What is penumbra?
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?
What is a shadow? What things are necessary for the formation of a shadow?
______ is always against, opposite side of light source.
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.
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 student had a ball, a screen and a torch in working condition. He tried to form a shadow of the ball on the screen by placing them at different positions. Sometimes the shadow was not obtained. Explain.
