Question

In a Cinema hall, the distance between the projector and the screen is increased by 2%. Then the intensity of illumination on the screen is
A) decreased by 2% B) decreased by 4% C) increased by 2% D) increased by 4%

Answer 1

In a Cinema hall, the distance between the projector and the screen is increased by 2%. Then the intensity of illumination on the screen is increased by 4%

Answer 2

Answer: B) decreased by 4%