If an object is placed at the center of curvature of a concave mirror, the image will be:

A convex lens has a focal length of 10 cm. If an object is placed 15 cm from the lens, the nature of the image formed is:

For light traveling from water (refractive index 1.33) to air, the critical angle is closest to:

If parallel rays pass through a convex lens and converge at a point 12 cm behind the lens, the focal length of the lens is:

A person stands 3 meters in front of a plane mirror. If they move 1 meter closer to the mirror, the distance between them and their image will now be:

Which of the following setups will produce an image that is virtual, upright, and larger than the object?

If a light ray moves from a glass medium to an air medium at an angle of 30° with the normal, it:

The magnification produced by a convex lens is +3. This indicates that the image is:

Which type of lens is used to correct myopia (nearsightedness)?

If the speed of light in a medium is $ \displaystyle 2\times {{10}^{8}}$ m/s, and in a vacuum, it’s $ \displaystyle 3\times {{10}^{8}}$ m/s, what is the refractive index of the medium?

For a convex lens with a focal length of 10 cm, if the object is placed at 5 cm from the lens, the image formed will be:

If a parallel beam of light passes through a concave lens, it:

In the context of a convex lens, the principal axis is defined as:

If a concave mirror has a focal length of 15 cm, then its radius of curvature is:

The image formed by a plane mirror: