Question

Ram did an experiment with a ball and a torch. At first, he placed the torch exactly perpendicular to the ball (position A) and then he kept the torch in a slightly inclined position to the left (position B). The correct observation about the size of shadows formed in the two positions are :

• A. The shadow at position A and position B was of the same size of that of the ball .
• B. Shadow at position A is greater than the shadow at position B.
• C. Shadow at position B is greater than the shadow at position A.
• D. The shadow at position A and position B was of the same size but larger than the size of the ball .

Answer 1

The correct option is C Shadow at position B is greater than the shadow at position A.

The shadow formed when the torch is perpendicular will be the shortest whereas the shadow formed when the torch is placed in an inclined position is smaller. This is because the incident angle is small and hence the shadow will be bigger.