Question

The shadow of a cylinder is a rectangle when falls in one direction, and a when light falls in the other direction.
Torch (Light Source)
Object (Cylinder- kept vertically
Torch (Light Source)
Object (Cylinder- kept horizontally
Select one:
O a. Sheet
O b. Circle
c. None of the above
O d. Line


For refrence the picture is given above ​

Answer 1

for the first case the shadow will be in the shape of a rectangle aur sheet and in the second case the shadow will be in the form of a circle.

Explanation:

• a shadow is formed when a source of light is prevented from passing through by an opaque object. Here the shape of the shadow is determined by the type of the structure.
• First case has a rectangular surface which prevents the light to pass through. Hence the shadow will be like a sheet on the second case the circular cross section of the cylinder prevents the light to pass and hence the shadow will be circular

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