Science, asked by dharmanibharatkumar, 11 days ago


(i) एक लैंस की क्षमता + 4डायोप्टर है तो इसकी फोकस दूरी क्या होगी?​

Answers

Answered by burhaanikIQ
1

Answer:

0.25m OR 25 cm

Explanation:

Given: Power of lens (D)= 4 dioptre

To find : focal length of lens

Formula: Power of lens= 1/ focal length ( metre)

i.e. D=1/f(m)

Solution: D= 1/f(m)

4=1/f(m)

f(m)=1/4

f(m) = 0.25

f=0.25m OR 25cm

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