Question
In a photocell light energy is converted into –
Solution
Photocells are scientifically known as photo-resistors. A photo-resistor or light dependent resistor (LDR) is a resistor whose resistance decreases with increasing incident light intensity; in other words, it exhibits photoconductivity. A photo-resistor is made of a high resistance semiconductor. If light falling on the device is of high enough frequency, photons absorbed by the semiconductor give bound electrons enough energy to jump into the conduction band.
16Â Â Â 48Â Â Â Â 120Â Â Â Â 240Â Â Â 360Â Â Â ?
23   27    54    ?       195    231
...130 114 106 102 100 ?
5, 11, 32, 65, ?, 389
7Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 26Â Â Â Â Â Â Â Â Â Â Â 63Â Â Â Â Â Â Â Â Â Â Â 126Â Â Â Â Â Â Â Â Â Â 215Â Â Â Â Â Â 342
...11, 9, 15, 41 ,157, 789
5 14 56 220 1125 6786
...12                          13                         30                     �...
80, 255, 624, ?, 2400, 4095
If   20       x      46      147       604        3045
Then, x% of 25 = ?
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