Physics

Refraction, Reflection & Polarisation — Multiple-Choice Questions (Edexcel IAL Physics): Exam Questions

5 questions · 5 marks · ≈ 5 min

Guided practice

11 markmedium

The diagram shows refraction of a ray of light as it passes through three transparent substances, L, M and N. The speeds of light in the three substances are v_L, v_M and v_N, respectively.

q5-6-wph12-02-jan-2022-edexcel-int-as-a-level-phy

Which of the following shows the relationship between v_L, v_M and v_N?

Choose your answer

v_L> v_M > v_N

v_L> v_N > v_M

v_N> v_M > v_L

v_M> v_N > v_L

21 markmedium

The diagram shows refraction of a ray of light as it passes through three transparent substances, L, M and N. The speeds of light in the three substances are v_L, v_M and v_N, respectively.

q5-6-wph12-02-jan-2022-edexcel-int-as-a-level-phy

Which of the following could result in a ray of light undergoing total internal reflection?

Choose your answer

light travelling from L to M

light travelling from L to N

light travelling from M to L

light travelling from N to M

31 markmedium

A light bulb with an efficiency of 12% is positioned 2.0 m above a light sensor.

The intensity of light at the light sensor is 0.14 W m⁻².

Which of the following could be used to calculate the power of the light bulb?

Choose your answer

$( 0.14 ) \times ( 0.12 ) \times ( 4 \mathrm{\pi } ) \times ( 2.0 )^{2}$

$\frac{( 0.14 ) \times ( 4 \mathrm{\pi } ) \times ( 2.0 )^{2}}{0.12}$

$( 0.14 ) \times ( 0.12 ) \times ( \mathrm{\pi } ) \times ( 2.0 )^{2}$

$\frac{( 0.14 ) \times ( \mathrm{\pi } ) \times ( 2.0 )^{2}}{0.12}$

41 markeasy

Which of the following cannot be experimentally demonstrated with sound waves?

Choose your answer

polarisation

interference

diffraction

resonance

51 markmedium

An object is placed a distance $u$ from a lens of focal length $f$ . A real image is produced.

Which of the following gives the distance from the lens to the image?

Choose your answer

$\frac{1}{f}-\frac{1}{u}$

$\frac{u}{u-f}$

$\frac{uf}{u+f}$

$\frac{uf}{u-f}$