Light and Reflection Quiz

What is required for us to see an object?

• Just the presence of eyes

• Only if the object emits light

• Light from the object entering our eyes

• Presence of darkness

Which of the following is not a law of reflection?

• The angle of incidence is always equal to the angle of reflection.

• The incident ray, reflected ray, and normal lie in the same plane.

• The angle of incidence can be greater than the angle of reflection.

• Reflection follows the same laws regardless of surface smoothness.

What is lateral inversion?

• Reflection of light in a straight line

• The flipping of an image sideways in a mirror

• The bending of light in water

• Light splitting into different colors

What is the function of the iris in the human eye?

• It helps focus light on the retina.

• It adjusts the size of the pupil to control light entry.

• It reflects light to form images.

• It helps in detecting colors.

Which of the following objects is a luminous object?

• Moon

• Candle

• Mirror

• Book

The phenomenon of light splitting into different colors is called:

• Reflection

• Refraction

• Dispersion

• Diffraction

How many images are formed when two plane mirrors are placed at 90° to each other?

• 1

• 2

• 3

• 4

In a periscope, how many mirrors are used?

• One

• Two

• Three

• Four

The human eye lens is:

• Convex

• Concave

• Plane

• None of the above

Which of the following is a function of the retina in the human eye?

• Controlling the amount of light entering the eye

• Converting light into signals for the brain

• Moving the eyeball

• Adjusting the focus of light