Q1377
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%
AnswerC.
Increased by 2%
D.
Increased by 4%
Answer: Option B
Solution
Answer: Option B
Solution:
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 decreased by 4%.