Easy
Write the relationship between object distance $(u)$,image distance $(v)$,and focal length $(f)$ for a spherical mirror.
- A$\frac{1}{v} - \frac{1}{u} = \frac{1}{f}$
- B$\frac{1}{v} + \frac{1}{u} = \frac{1}{f}$
- C$\frac{1}{u} + \frac{1}{v} = \frac{1}{f}$
- D$\frac{1}{f} + \frac{1}{v} = \frac{1}{u}$
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The figure below shows an object $AB$ placed on the principal axis of a convex lens placed in air. $F_{1}$ and $F_{2}$ are the two foci of the lens. Copy the diagram.
$(i)$ Draw a ray of light starting from $B$ and passing through $O$. Show the same ray after refraction by the lens.
$(ii)$ Draw another ray from $B$ which passes through $F_{2}$ after refraction by the lens.
$(iii)$ Locate the final image formed.
$(iv)$ Is the image real or virtual?
$(i)$ Draw a ray of light starting from $B$ and passing through $O$. Show the same ray after refraction by the lens.
$(ii)$ Draw another ray from $B$ which passes through $F_{2}$ after refraction by the lens.
$(iii)$ Locate the final image formed.
$(iv)$ Is the image real or virtual?
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