G8 Revision S1M2

Which diagram(s) allows the observer to see the light given off by the torch?  

• i

• ii

• i and ii

• iii and iv

The diagram shows white light passing through a prism.

Which of the following gives colours in the correct order from A to B?

• red, green, violet

• red, violet, green

• violet, red, green

• violet, green, red

The diagram below shows the position of the Sun, the Earth and the Moon during a lunar eclipse.  

Explain the formation of the Earth’s shadow on the Moon during a lunar eclipse.

• The Moon passes directly between the Earth and the Sun, causing the Earth to cast a shadow on the Moon.

• The Earth is positioned between the Moon and the Sun, with the Earth blocking the sunlight from reaching the Moon.

• The Moon aligns perfectly with the Sun and Earth, creating a shadow that gradually covers the lunar surface.

• The Moon enters the Earth's shadow zone, causing the Moon to darken and turn red.

A teacher has a lock mounted so that students can only see its reflection in a plane mirror. The diagram shows the reflection of the clock.A teacher has a lock mounted so that students can only see its reflection in a plane mirror. The diagram shows the reflection of the clock.

What time is shown on the clock?

• 05:40

• 07:40

• 07:20

• 06:20

When light passes from a denser material into a less dense material.

• Light slows down and bends towards the normal.

• Light slows down and bends away from the normal.

• Light speeds up and bends towards the normal.

• Light speeds up and bends away from the normal.

The diagram shows light passing from air into glass. A number of angles have been labeled on the diagram. Which of the following letters is the correct angle of incidence?

• P

• Q

• R

• S

An object seems to be nearer to the observer as a result of _____

• Reflection

• Dispersion

• Refraction

• Suspension

The image below shows white light being split into its constituent colours by a glass prism.

Why does a prism cause white light to be dispersed?

• Light towards the red end of the spectrum slows down less than light towards the violet end of the spectrum as it moves through the glass.

• Light towards the red end of the spectrum slows down more than light towards the violet end of the spectrum as it moves through the glass.

• The frequency of the light towards the red end decreases more than the frequency of light towards the violet end of the spectrum.

• The frequency of the light towards the violet end decreases more than the frequency of light towards the red end of the spectrum.

A student is investigating the refraction of light.

The student measured angle ‘r’ for several different values of angle ‘i'.

the table shows the student’s results.

Use this table to estimate the value of angle ‘r’ when the angle is 80⁰.

• 41

• 80

• 22

• 31

A student investigates what happens when light travels from air to glass.

Figure 2 shows some of the apparatus used in the investigation.

In Figure 2, angle Y is the angle of

• Deflection

• Incidence

• Reflection

• Refraction