Question

If $x_1$ be the size of the magnified image and $x_2$ the size of the diminished image in Lens Displacement Method, then the size of the object is

• A. $\sqrt{x_1 x_2}$
• B. $x_1 x_2$
• C. $x_1^2 x_2$
• D. $x_1 x_2 ^2$

Answer 1

Answer: (A)

$\sqrt{x_1 x_2}$

Answer 2

The size of the object in accordance with the Fresnel's displacement law is given by $\sqrt{x_{1} \,x_{2}}$.