In making which is a convex mirror used?

Think it through first, then pick an option.

a torch light
b a launch's searchlight
c a rear-view mirror
d laser

Answer and explanation

Correct answer: c a rear-view mirror

The rear-view mirror of a car is made with a convex mirror, because a convex mirror gives an upright, smaller image and shows a large scene in a small space. A torch light and a searchlight use a concave mirror; a laser is not in this book.

Why the other options are wrong

a torch light: This is not the answer: The rear-view mirror of a car is made with a convex mirror, because a convex mirror gives an upright, smaller image and shows a large scene in a small space. A torch light and a searchlight use a concave mirror; a laser is not in this book.
b a launch's searchlight: This is not the answer: The rear-view mirror of a car is made with a convex mirror, because a convex mirror gives an upright, smaller image and shows a large scene in a small space. A torch light and a searchlight use a concave mirror; a laser is not in this book.
d laser: This is not the answer: The rear-view mirror of a car is made with a convex mirror, because a convex mirror gives an upright, smaller image and shows a large scene in a small space. A torch light and a searchlight use a concave mirror; a laser is not in this book.