S2 Physics - Light Waves

What happens when light passes from air into water?

• It speeds up

• It bends (refracts)

• It changes color

• It disappears

What type of lens is used to focus light to a point?

• Concave lens

• Convex lens

• Flat lens

• Cylindrical lens

Which of the following colors has the shortest wavelength?

• Red

• Blue

• Green

• Violet

What is the angle of incidence in relation to the angle of reflection?

• Equal

• Half

• Double

• Perpendicular

What is the main use of concave lenses?

• To magnify objects

• To focus light to a point

• To spread light rays apart

• To bend light

What causes the color of an object?

• The wavelength of light it emits

• The frequency of light it absorbs

• The temperature of the object

• The angle of light it reflects

Which phenomenon occurs when light bounces off a surface?

• Refraction

• Reflection

• Dispersion

• Diffraction

What is the purpose of the focal point in a lens?

• To scatter light

• To focus light rays to a single point

• To magnify objects

• To absorb light

What happens when white light passes through a prism?

• It splits into a spectrum of colors

• It becomes brighter

• It loses its intensity

• It becomes invisible

When light enters a denser medium, what happens to its speed?

• It decreases

• It increases

• It remains the same

• It fluctuates