IGCSE Physics Topic 3.2 Light

A ray of light passes through a window. Which path does it take? 

• A
• B
• C
• D

Tags

NGSS.MS-PS4-2

The diagram shows the image of a clock in a plane mirror. What time is shown?

• 02:25 
• 02:35 
• 09:25 
• 09:35 

 A parallel beam of light falls on a converging lens. Which diagram shows what happens to the beam of light? 

• A
• B
• C
• D

A man sees a stone at the bottom of a pool of water. Which path could be taken by light from the stone to the man? 

• A
• B
• C
• D

Tags

NGSS.MS-PS4-2

A ray of light is reflected by two parallel plane mirrors X and Y.  Which statement is correct? 

• The angle of incidence at mirror X is 30°.
• The angle of incidence at mirror Y is 60°.
• The angle of reflection at mirror X is 120°.
• The angle of reflection at mirror Y is 0°. 

Tags

NGSS.MS-PS4-2

A student shines a narrow beam of white light into a prism as shown in the diagram. He sees a spectrum of colours emerging from the prism.  Which three colours does he see at X, at Y and at Z? 

• X: blue, Y:yellow, Z:red
• X: red, Y:blue, Z:yellow
• X: red, Y:yellow, Z:blue
• X: yellow, Y:red, Z:blue

Tags

NGSS.MS-PS4-2

A ray of red light enters a semi-circular glass block normal to the curved surface. Which diagram correctly shows the partial reflection and refraction of the ray? 

• A
• B
• C
• D

An object 5.0 cm high is placed 2.0 cm from a converging (convex) lens which is being used as a magnifying glass. The image produced is 6.0 cm from the lens and is 15 cm high.
What is the focal length of the lens? 

• 2.0cm
• 3.0cm
• 4.0cm
• 6.0cm 

Which colour, red or blue, has the higher frequency and which has the longer wavelength? 

• higher frequency: blue
  longer wavelength: blue
• higher frequency: blue
  longer wavelength: red
• higher frequency: red
  longer wavelength: blue
• higher frequency: red
  longer wavelength: red

An eye views an object O by reflection in a plane mirror. Which is the correct ray diagram? 

• A
• B
• C
• D

Tags

NGSS.HS-PS4-1