Question

A photograph of a horse is taken by a camera whose lens has been painted with black stripes. The photograph will be of a :

• A. horse with same brightness as would have been if lens was not painted
• B. zebra with same brightness as would have been if lens was not painted
• C. horse with less brightness as would have been if lens was not painted
• D. zebra with less brightness as would have been if lens was not painted

Answer 1

The correct option is C horse with less brightness as would have been if lens was not painted

As the image is formed by a large number of rays from the object. So, if any part of the lens is covered, the image will be formed but the brightness of image will be less as compared to the image formed by without wrapping the lens. Hence, if a photograph of a horse is taken by a camera whose lens is painted with black stripes, the photograph will be of a horse with less brightness as would have been if lens was not painted.