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Which optical device uses a convex mirror to provide a wider field of view?

1. Microscope
2. Periscope
3. Rearview mirror of vehicles
4. Telescope

Correct answer: Rearview mirror of vehicles

Solution

Convex mirrors provide a wider field of view because they diverge reflected rays and form upright, diminished images. This is why they are used as rearview mirrors in vehicles.

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