  Question: Find the focal length of a lens whose power is as +2D

Posted by: Sejal c. on 27.05.2021

M
Malay K. from Kolkata
• Like
50 cm
M
Malay K. from Kolkata
• Like
50 cm
M
Malay K. from Kolkata
• Like
50 cm
M
Malay K. from Kolkata
• Like
50 cm
M
Malay K. from Kolkata
• Like
50 cm • Like

focal length (f)= 1/power (p in m).

so here in question power(p) is given which is 2 Dioptre.

Now put in formula and get the Answer

F=1/2(m) =0.05m=50cm.

Y
• Like
Focal length (f) = 1/p P = power Given p = 2.0d F = 1/p = 1/2.0 = 0.5m = 50cm
Y
• Like
Focal length (f) = 1/p P = power Given p = 2.0d F = 1/p = 1/2.0 = 0.5m = 50cm
Y
• Like
Focal length (f) = 1/p P = power Given p = 2.0d F = 1/p = 1/2.0 = 0.5m = 50cm

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