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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.
In alchemy, aqua fortis is the classical name of which chemical compound that is used chiefly in the manufacture of explosives and fertilisers, and in o...
Sour Taste of Coca-Cola is due to the presence of which of the following acid?
A metal plate with a circular hole at the centre is heated. What will happen to the area of the hole?
A rod of length 2 m expands by 2 mm when heated. If coefficient of linear expansion is 1 x 10-5 / 0C, find temperature change.
Two blocks of unequal mass are connected by a string and placed on a smooth horizontal surface. A force F is applied on the heavier block. The tension i...
Which of these is not a function of proteins?
What is the product of the reaction?
CH₃COOH + CH₃OH → (H⁺, heat)
The Periodic Law stating that ‘the properties of elements are the periodic function of their atomic masses’ was given by
Which of the following is a conductor of electricity?
Non-vascular plants do not contain:
