Question

At which position a light source should be placed over a cylindrical object placed on a table, so that no shadow is seen?

• A. To the right of the cylinder
• B. To the left of the cylinder
• C. On the exact top
• D. At an angle of ${30}^{\circ }$

Answer 1

The correct option is C On the exact top

If a light source is placed on the exact top of a cylindrical object, the shadow thus formed would fall on the object and coincide with it and the table. Hence, the shadow cannot be observed.