Skip to content

Course home

Sign up

3.2.2 Refraction of light

EasyMedium
12345678910111213141516171819202122232425262728293031323334353637383940414243444546
Question 22

A ray of light travels from water into a block of glass. The relative refractive index of glass with respect to water is nnn.

In waterIn glass
Speed of rayvwv_{\text{w}}vw​vgv_{\text{g}}vg​
Wavelength of rayλw\lambda_{\text{w}}λw​λg\lambda_{\text{g}}λg​
Frequency of rayfwf_{\text{w}}fw​fgf_{\text{g}}fg​

Three suggestions as to how the relative refractive index n n\,n may be calculated are listed:

  1. n=vwvg\displaystyle n = \frac{v_{\text{w}}}{v_{\text{g}}}n=vg​vw​​

  2. n=λwλg\displaystyle n = \frac{\lambda_{\text{w}}}{\lambda_{\text{g}}}n=λg​λw​​

  3. n=fwfg\displaystyle n = \frac{f_{\text{w}}}{f_{\text{g}}}n=fg​fw​​

Which suggestions are correct?

A

1, 2 and 3

B

1 and 2 only

C

1 and 3 only

D

2 and 3 only

Markscheme

3.2.2 Refraction of light Questions

  1. IGCSE
  2. /Physics
  3. /3.2.2 Refraction of light

100 exam-style questions on CIE IGCSE Physics 3.2.2 Refraction of light. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank