Easy
Give two uses of a convex lens.
(N/A) The two uses of a convex lens are as follows:
$(i)$ It is used in projectors to project images onto a screen.
$(ii)$ It is used in cameras to focus light onto the image sensor or film.
$(i)$ It is used in projectors to project images onto a screen.
$(ii)$ It is used in cameras to focus light onto the image sensor or film.
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