Psychology, asked by gangambikapatne, 19 days ago

5. Doctor advised to use 2D lens, then focal length of lens is A) 40 cm B) 50 cm C) 30 cm D) 45 cm

Answers

Answered by appuammusreeharipoor

0

Answer:

so...

Explanation:

4 is the answer. 40 cm

Answered by arunavabanerjee121

1

Answer:

50 cm

Explanation:

given focal length is 2D

p=1/f

2=1/f

f = 1/2

F=0.5 cm

=50 cm

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