Image Formation Basic

When an object is placed between the focal point and the optical centre of the convex lens, the image produced is ___.

• real, diminished, and inverted

• real, enlarged, and inverted

• virtual, enlarged, and erect

• virtual, diminished and erect

A real image...

• is produced by virtual rays and can be projected on a screen

• is produced by real rays and cannot be projected on a screen

• is produced by virtual images and cannot be projected on a screen

• is produced by real rays and can be projected on a screen

If an object is placed at a point 2F infront of a converging lens, Which of the following will describe the image correctly ?

• Real

• Inverted

• Same Size

• Beyond 2F

If an object is placed between F & 2F points in front of a converging lens, which of the following will describe the image correctly. Select all that apply.

• Real

• Inverted

• Larger

• Located beyond 2F

Where can you place an object in order to get a virtual image? Select all that apply.

• beyond 2F

• at 2F

• between F & 2F

• at F

• between F and the optical centre of the lens

Where can you place an object in order to get an image of the same size as the object? Select all that apply.

• beyond 2F

• at 2F

• between F & 2F

• at F

• between F and the lens

Which of the following can be termed as convergent?

• Concave mirror and concave lens

• Convex mirror

• Concave lens

• Concave mirror and convex lens

What is magnification?

• inverse of focal length

• ratio of image height to object height

• angle of reflection equals the angle of incidence

• distance from the center of a lens or curved mirror to its focal point

1. Focal length of a concave mirror is:

• negative

• positive

• depends on the position of object

• depends on the position of image

The image formed of an object at the center of curvature of concave mirror. The object is placed at?

• Focal length

• Twice of focal length

• Between pole and focus

• Beyond center of curvature