Geometrical OpticsMedium
Question
in an experiment to find the focal length of concave mirror, a graph is drawn between the magnitudes of u and v. The graph looks like:
Options
A.
B.
C.
D.
Solution
Is the formula which relates u & v. 
Slope of this cure can be found differentiation -
du = 0 + 
⇒
is the slope which is negative so either curve (c) or curve (a) is right. Now the slope depends upon the value of u&v i.e. it kepps changing at every point as per the eqution above so figure (c) is the answer.Create a free account to view solution
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