Question

find the power of a convex lens which forms a real and inverted image of m= to 1 of an object placed at a distance of 20 cm from its optical centre Plz note that magnification m= 1 Plz answer me sincerely

Answer 1

ANSWER:

u= -20cm , m= -1 [given]

since magnification is given so, m=v/u

implies v= mu

=( -1) * ( -20)

=20 cm

focal length(f)

1/f = 1/v - 1/u =1/20 - ( 1/-20) =1/10

implies, f = 10 cm

so, the power of convex lens= 1/f(in m) = 1/(10/100) = 100/10 = 10D

so, the answer is 10d

》plz mark as brainliest answer because I want to level up.