| Question |
Answer |
| E=hf is an equation you must be able to recognise and use. What does each letter stand for? |
E = Energy of photons; h = Planck's constant; and f = Wave frequency |
| When E=hf, what is the unit of 'h'? |
Js^-1 |
| What is radiation flux a measure of? |
It is a measure of how intensely light shines on something |
| Flux = power/area. Give the unit of 'flux'? |
Wm^-2 |
| State one application of Gamma waves |
Sterilising medical equipment is an example of an application... |
| Name one detector of X-Rays |
Photographic films |
| The absorption of a photon can result in the emission of a photoelectron. What is the name of this 'effect'? |
The photoelectric effect! |
| For a given surface, there is a minimum frequency of light below which no emission of photoelectrons occurs. What is this frequency known as? |
Threshold frequency |
| eV - what does this non-SI unit stand for? |
Electronvolt |
| On a negatively charged electroscope, what effect does UV light have on the gold leaf? |
The gold leaf falls (immediately) |
MedTemCP5 Word+Pics
