| Front | How do LDR's work? |
| Back | As light intensity increases, its resistance decreases |
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| Front | Certain Frequency? [Photoelectric Effect] |
| Back | Threshold Frequency- Minimum frequency of photons required for photoelectrons to be emitted from a metals surface- Different for different types of metals |
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| Front | Describe an experiment to identify the type of radiation emitted from a source |
| Back | 1) Use a Geiger Muller Tube + Counter to find Background Radiation2) Place radioactive source close to counter and measure count rate3) Place sheet of paper between. If count decreases significantly = Alpha4) Repeat with Aluminium foil and several inches of Lead |
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