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Q. What are secondary cells? Give an example?
i) They are rechargeable.
ii) The chemical reactions which take place in secondary cells are reversible.
iii) The active materials which are used up when the cell delivers current can be reproduced by passing current through the cell in opposite direction. Instance lead acid accumulator and alkali accumulator.
composition of two SHM at right angle to each other and having time period in the ratio of 1: 2
Demonstrating the cause of the phases of the moon Place a lighted candle or electric lamp on a table in a darkened room. Paint an 8 cm rubber ball white. Hold the ball in your
Derive Zero'th Law Statement: "two systems in thermal equilibrium with a third system separately are in thermal equilibrium with each other". Explanation : If A and B
hearts observation
What is the Interference ? A single frequency light passing through a pair of closely spaced slits will show a pattern of vertical bands, due to alternating constructive and des
Q. What are the uses of Raman spectrum? (i) It is widely utilized in almost all branches of science. (ii) Raman Spectra of dissimilar substances enable to classify them acc
A charged particle is moving in a UNIFORM magnetic field. If the direction of motion of the charged particle is parallel to the magnetic field, explain the shape of the charg
The Zinc Blende or Sphalerite Structure. Zinc blende is same to diamond cubic structure, but the two FCC sub-lattices are occupied by atoms of two dissimilar elements. Some of
Metallization: It is the process of giving electrical connections among different parts of the circuit. Aluminium is commonly used. It has a high electrical conductivity and a low
What is meant by tunnelling phenomenon? A tunnel diode is a high conductivity two-terminal P-N junction doped heavily about 1,000 times higher than a conventional junction diod
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