An optical device used by watch repairers is __________.

Open in App

Solution

An optical device used by watch repairer is magnifying glass which is a convex lens.

Suggest Corrections

Similar questions

Fill in the blanks

(1) A ray of light parallel to principal axis after reflection from concave mirror passes through _______

(2) The focal length of _______ lens is positive.

(3) The image of an object is formed behind _______ in hypermetropia.

(4) An optical device used by watch repairers is _______

(5) The power of spectacle for myopic eye is_______.

Give reasons:

(1) You cannot enjoy watching a movie from a very short distance from the screen in a cinema hall.

(2) A simple microscope is used by watch repairers.

(3) A concave lens is used to correct myopia.

(4) In gold age bifocal lens is necessary for some person.

(5) Concave mirrors are used in solar devices.

Join BYJU'S Learning Program