Physics Quiz for SSS 2 Students. Term 3 Half Term

What is the phenomenon of refraction of light through lenses?

• Bending of light

• Reflection of light

• Absorption of light

• Scattering of light

Which optical instrument is used to magnify small objects?

• Telescope

• Microscope

• Camera

• Projector

What is the formula for calculating the focal length of a lens?

• 1/f = 1/v + 1/u

• f = mv

• f = ma

• f = mgh

In which medium does light travel fastest?

• Air

• Water

• Glass

• Vacuum

What happens to light when it passes from air into water?

• It speeds up

• It slows down

• It reflects

• It disappears

Fill in the blank: The angle of incidence is equal to the angle of ______.

What type of lens is thicker in the middle than at the edges?

• Concave lens

• Convex lens

• Bifocal lens

• Cylindrical lens

What is the term for the bending of waves as they pass from one medium to another?

• Diffraction

• Refraction

• Interference

• Reflection

What is the speed of light in a vacuum?

• 300,000 km/s

• 150,000 km/s

• 1,000 km/s

• 3,000 km/s

What is the primary function of a lens in optical instruments?

• To focus light

• To disperse light

• To absorb light

• To reflect light