Physics 5054 · O Level · Dispersion of light

Dispersion of light — practice question

The Sun emits electromagnetic radiation, and that radiation then travels from the Sun to the Earth.
(a)[2]

A few of the statements below are true, while the others are false. Put a tick (✓) in the box beside each statement to indicate true or false.

(b(i))[3]

On Fig. 9.1, draw to illustrate how the prism acts on the light as it travels through the prism.

(b(ii))[2]

Explain why the prism separates white light into different colours.

(c(i))[1]

State the speed of light in a vacuum.

(c(ii))[2]

Calculate the time for light to go from the Sun to the Earth. The Earth is $1.5 \times 10^8\,\text{km}$ from the Sun.

(d(i))[2]

Calculate the electric current in this volume of space. A charge of $180\,\text{C}$ passes through a small volume of space in $2.0\,\text{minutes}$.

(d(ii))[3]

Complete the table in Fig. 9.2 for an alpha-particle, a proton and a gamma ray.

Worked solution & mark scheme

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