A double concave lens has two radii of curvature -10cm and -20cm. Calculate the focal length of this lens if the refractive index of glass is 1.5
Answers
Answered by
2
Answer:
Explanation:
We know the Lens maker formula:
1/f=(u-1)((1/R1)-(1/R2)), where f is focal length,u is refractive index and R is radius of curvature.
So,1/f= -1/40So, focal length=-40cm.
Hope you understood
Answered by
0
Answer:
hey watch the above pic for ur answer of the question
Attachments:

Similar questions