SCS Year 7 Light

Which of these objects is not luminous?

• The sun

• A star in the sky

• The moon

• A candle

According to the Law of Reflection...

• the angle of incidence is equal to the angle of reflection

• the angle of incidence is greater then the angle of reflection

• the angle of incidence is smaller than the angle of reflection

• the angle of incidence is not equal to the angle of reflection

A ray of light is incident on a plane mirror and the angle of incidence is 25 degrees. What is the angle of reflection?

• 0 degrees

• 50 degrees

• 100 degrees

• 25 degrees

The bending of a ray of light as it travels from one medium to another is called

• reflection

• refraction

• the total internal reflection

• deflection

A ray of light is shone on a rectangular glass block as shown. Identify X, Y and Z.

• X = Angle of reflection, Y = Angle of incidence, Z = Normal

• X = Angle of Refraction, Y = Angle of incidence, Z = Emergent ray

• X = Angle of incidence, Y = Emergent ray, Z = Angle of refraction

• X = Angle of incidence, Y = Angle of refraction, Z = Emergent ray

When a ray of light travels from a vacuum to a denser medium such as glass, it is refracted away from the normal.

• True

• False

The primary colours are

• red, white and blue

• red, green and yellow

• red, blue and yellow

• red, green and blue

Which of the following colours has the shortest wavelength?

• Orange

• Yellow

• Green

• Red

Which of these parts of the eyes fits this description?

"The outer coating of the eye. It is the opaque protective layer, known as the ‘white of the eye' ".

• Fovea

• Sclera

• Cornea

• Retina

Which of these parts of the eyes fits this description?

"A small pit in the retina shaped to allow the light to fall straight onto the nerve cells so that we can see very detailed objects.

• Fovea

• Sclera

• Cornea

• Retina