Making measurements: the law of reflection

What is the angle between the normal and the reflected ray called?

• Angle of incidence

• Angle of reflection

• Angle of deflection

• Angle of refraction

What enables a kaleidoscope to create beautiful patterns?

• Multiple prisms

• Multiple lenses

• Multiple mirrors

• A single mirror

What is the primary function of a periscope?

• To create images

• To distort light

• To amplify sound

• To see over obstacles

Which of the following is NOT a property of a periscope?

• Reflection of light

• Refraction of light

• Multiple mirrors

• Ability to look over obstacles

When a ray of light hits a mirror, what is the line drawn at right angles to the mirror called?

• Parallel line

• Perpendicular line

• Tangent line

• Slope line

What property of light does the law of reflection describe?

• Refraction

• Absorption

• Reflection

• Dispersion

How does a periscope enable one to look over a wall?

• By bending light rays

• By reflecting light rays

• By absorbing light rays

• By diffusing light rays

How did Arjun and Diya measure the angles of incidence and reflection on the diagram?

• By connecting dots on the paper

• By using a ruler

• By counting degrees

• By using a laser pointer

What is the purpose of a periscope?

• To distort images

• To reflect light

• To look over obstacles

• To produce colors

How does a periscope help in viewing objects?

• By magnifying them

• By reflecting light

• By bending light

• By changing their color