IGCSE Physics (0625) Unit 3. Properties of waves -3.2.4 Dispersion of light Paper 1

Question

The diagram shows radiation from a lamp passing through a prism.

                       

Which type of radiation is found at P?

A γ-rays

B infrared

C ultraviolet

D X-rays

Answer/Explanation

Ans: B

Question

A narrow beam of white light passes through a prism and is dispersed into a spectrum.

                     

Which row is correct?

 

colour 1

colour 2

colour 3

A

blue

yellow

red

B

red

blue

yellow

C

red

yellow

blue

D

yellow

blue

red

Answer/Explanation

Ans: C

Question

Which diagram shows what happens when a ray of white light passes through a prism?

     

Answer/Explanation

Ans: D

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