Lens Equation

The h_{o in this diagram is positive.}

• True

• False

Tags

NGSS.HS-PS3-4

The d_o will be a _________________ value.

• positive

• negative

In the mirror equation above d₀ represents:

• Distance of the object from the mirror

• Distance of the image from the mirror

• The focal length

• The plane of incidence

To focus light onto the photosensitive surface at the back of the camera. This can either be photographic film or a CCD (charge-coupled device)

• Lens

• Focusing screw

• Shutter

• Aperture

Tags

NGSS.HS-PS4-5

Which of the following is the correct form of the lens equation?

If the focal length of a lens is 10 cm and the object distance is 30 cm, what is the image distance?

• 15 cm

• 20 cm

• 30 cm

• 40 cm

A lens has a focal length of -15 cm. What type of lens is it?

• Convex lens

• Concave lens

• Biconvex lens

• Plano-convex lens

Which of the following statements is true about the lens equation?

• It is applicable only for convex lenses.

• It is applicable only for concave lenses.

• It is applicable for both convex and concave lenses.

• It is not applicable for any lens.

In an experiment, a lens forms a real image of an object placed 25 cm away. If the image is formed 50 cm on the other side, what is the focal length of the lens?

• 16.67 cm

• 20 cm

• 25 cm

• 33.33 cm

What happens to the image distance if the object distance is increased while using a convex lens?

• Image distance increases

• Image distance decreases

• Image distance remains the same

• Image distance becomes zero