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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.
What is an illuminator? An illuminator, light generator or source is a box along with a lamp inside, pointing in the direction of an opening where fiber optics is secured. Obvi
what are unlike parallel forces with example?
Step to improve Power Factor By using static capacitor: Static capacitor is usually used to better the power factor of the power system. As the capacitor draws leading curre
Fibre optics: Light travels in straight lines, even though lenses and mirrors can deflect it, light still travels in a straight line between optical devices. This is fine for
The airplane shown in the figure is to achieve "weightlessness" for a short period of time by flying along a curved path such that it's acceleration components in x direction a x
Define the introduction about Schrödinger’s Atom. Introduction to the Schrödinger’s Atom: To describe the spectral line puzzle, Bohr came up along with a radical model of t
Longitudinal Waves and Guitar Strings According to the diagram this pressure wave consists of rarefactions and compressions. The compressions are regions of high pressure, wher
Because force=dp/dt and force=0 in first law of motion => dp/dt=0 => p=const. or linear momentum is conserved.
Q. What are the changes that take place at the superconducting transition temperature? At the transition temperature the subsequent changes are observed (i) The electrical res
Draw a picture of a moving source and the waves surrounding it according to what you observed in this experiment. How does the spacing of the wave-fronts in front of the source com
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