Question 7
State two differences between a convex and a concave lens.

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Solution

$\begin{matrix} C o n v e x l e n s & C o n c a v e l e n s (i) C o n v e x l e n s c o n v e r g e s t h e l i g h t f a l l i n g o n i t & (i) C o n c a v e l e n s d i v e r g e s t h e l i g h t f a l l i n g o n i t . (i i) C o n v e x l e n s i s t h i c k e r i n t h e m i d d l e . & (i i) C o n c a v e l e n s i s t h i n n e r i n t h e m i d d l e . \end{matrix}$

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Question 7

You are provided with a convex mirror, a concave mirror, a convex lens and a concave lens. You can get an inverted image from

(a) both concave lens and convex lens.

(b) both concave mirror and convex mirror.

(d) Both convex mirror and concave lens.

State difference between a convex and a concave lens in their (a) appearance, and (b) action on the incident light.

State two applications each of a convex and concave lens.

What is a lens? Write the differences between concave and convex lenses. [5 MARKS]

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