power of concave lense is 4.5D. find it focal length
Answers
Answered by
3
Power of concave lens is=-4.5D
P=1/F
=>-4.5=1/F
=>F= 1/-4.5m
=>F=1/-4.5×100cm
=>F= -22.3
Focal length of lens, F = -22.3cm
P=1/F
=>-4.5=1/F
=>F= 1/-4.5m
=>F=1/-4.5×100cm
=>F= -22.3
Focal length of lens, F = -22.3cm
Similar questions