Advertisement Remove all ads

Find the focal length of a lens of power -2.0 D. What type of lens is this? - Science

Advertisement Remove all ads
Advertisement Remove all ads
Advertisement Remove all ads
Numerical

 Find the focal length of a lens of power -2.0 D. What type of lens is this?

Advertisement Remove all ads

Solution

Power of lens, P= 1/f 
P= -2D
f= -1/2 = -0.5 m
A concave lens has a negative focal length. Hence, it is a concave lens.

Concept: Power of a Lens
  Is there an error in this question or solution?

APPEARS IN

NCERT Class 10 Science
Chapter 10 Light – Reflection and Refraction
Q 16 | Page 186
Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×