Reflection of Light - Plane Mirror

The illustration shows a light ray striking an object. In the illustration, the light ray striking the object is

• absorbed

• stopped

• reflected

• refracted

Answer explanation

The light ray striking the object in the illustration is reflected, not absorbed, stopped, or refracted.

The ray of light that strikes a reflecting surface is called ________.

• incident ray
• reflected ray
• normal ray
• none of the above

Which is NOT a source of light?

• sun

• lightbulb

• fire

• rock

Answer explanation

The correct choice is 'rock' because it is not a source of light, unlike the sun, lightbulb, and fire which emit light.

The angle produced as a ray bounces off a reflecting surface is called angle of ______.

Which of the following diagrams shows a diffuse reflection?

• Diagram a
• Diagram b

Answer explanation

Diagram a shows a diffuse reflection where light is scattered in different directions, unlike diagram b which shows a specular reflection with light reflecting at a specific angle.

Which reflection gives a clear image like a mirror?

• Diagram a
• Diagram b

Answer explanation

Diagram a shows a diffuse reflection where light is scattered in different directions, unlike diagram b which shows a specular reflection with light reflecting at a specific angle.

Type of mirror found in a bathroom...

• Plane
• Convex
• Concave

Answer explanation

Plane mirrors are commonly found in bathrooms as they provide a clear and undistorted reflection of the person standing in front of them.

Which of the following statements best describes the first law of reflection?

• The angle of incidence is equal to the angle of reflection.
• The incident ray, the reflected ray, and the normal at the point of incidence all lie in the same plane.
• The angle of refraction depends on the angle of incidence and the refractive indices of the two materials.
• The direction of light changes as it passes through a medium with a varying refractive index.

Which of the following statements best describes the second law of reflection?

• The angle of incidence is twice the angle of reflection ( î = 2.r̂ )
• The incident ray, the reflected ray, and the normal at the point of incidence all lie in the same plane.
• The angles of incidence and reflection are equal ( î = r̂ )
• The direction of light changes as it passes through a medium with a varying refractive index.

The principle of reversibility states that the path followed by light is _____________ of its direction of travel.