Question 22
Question 22 of 40
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
2. Thermal physics
2.3.3. Radiation

Know that thermal radiation is infrared radiation and that all objects emit this radiation

5. Nuclear physics
5.2.1. Detection of radioactivity

Know the sources that make a significant contribution to background radiation including: (a) radon gas (in the air) (b) rocks and buildings (c) food and drink (d) cosmic rays

3. Waves
3.2.4. Dispersion of light

Describe the dispersion of light as illustrated by the refraction of white light by a glass prism