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Poke a Pinhole in a Piece of Card and Hold

Question 160

Multiple Choice

Poke a pinhole in a piece of card and hold it in sunlight and an image of the Sun is cast on the floor.The Sun-image diameter depends on the height of the pinhole above the floor.Measurements for all heights show the Sun-image diameter is about 1/100 the distance between the pinhole and the floor.This means that


A) about 100 end-to-end Sun images would fit between the pinhole and the floor.
B) distance-wise,the Sun is about 100 Suns away from Earth.
C) both of these
D) none of the above

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