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What is light? Word Scramble

 
 


 

 
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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 wavesSterilising medical equipment is an example of an application...
Name one detector of X-RaysPhotographic 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)