Sure! Let's find the power of a concave lens with a focal length of 2 meters.
The power of a lens (P) is calculated using the formula:
[tex]\[ P = \frac{1}{f} \][/tex]
where [tex]\( P \)[/tex] is the power of the lens (measured in diopters, D) and [tex]\( f \)[/tex] is the focal length of the lens (measured in meters).
Given:
- The focal length, [tex]\( f \)[/tex], of the concave lens is 2 meters.
Now, substituting the given focal length into the formula:
[tex]\[ P = \frac{1}{2} \][/tex]
Therefore, the power of the concave lens is:
[tex]\[ P = 0.5 \, \text{D} \][/tex]
So, the power of the concave lens with a focal length of 2 meters is [tex]\( 0.5 \)[/tex] diopters.
