4F - 4. Reflection and Refraction of Light

What is the incoming ray of light that strikes a mirror called?

• Refracted ray

• Incident ray

• Normal ray

• Reflected ray

What is the angle of incidence equal to?

• Angle of refraction

• Angle of reflection

• Angle of divergence

• Angle of convergence

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

• It speeds up

• It bends

• It disappears

• It reflects

What is the refractive index of a medium?

• Speed of light in vacuum divided by speed of light in medium

• Speed of light in medium multiplied by speed of light in vacuum

• Speed of light in medium divided by speed of light in vacuum

• Speed of sound in medium divided by speed of light in vacuum

What is the speed of light in glass?

• 200,000 km/s

• 300,000 km/s

• 150,000 km/s

• 100,000 km/s

Who discovered the relationship between the angles of incidence and refraction?

• Isaac Newton

• Albert Einstein

• Willebrord Snell

• Galileo Galilei

What type of lens is thickest in the middle?

• Biconcave lens

• Concave lens

• Convex lens

• Flat lens

What is the principal focus of a convex lens?

• The point where rays converge

• The point where rays are parallel

• The point where rays disappear

• The point where rays diverge

What type of lens is known as a diverging lens?

• Plano-concave lens

• Convex lens

• Biconvex lens

• Concave lens

What type of image is formed by a convex lens?

• Virtual image

• Real image

• Inverted image

• Upright image