Many different types of lenses play an important part in our daily life.

• True

• False

All cameras form images in the same basic way.

• True

• False

The image formed in a camera is real.

• True

• False

The image formed in a camera is erect.

• True

• False

The image formed in a camera is generally enlarged.

• True

• False

In the camera, the diaphragm is placed in front of the convex lens.

• True

• False

The smaller the f-number of a camera, the wider the aperture is.

• True

• False

The shutter speed is expressed in metre per second.

• True

• False

The shutter speed is expressed in radian per second.

• True

• False

The shorter the exposure time, the lower the shutter speed is.

• True

• False