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Gaia hypothesis (J. Lovelock, 1969): The idea that as a whole Earth should be regarded as a living organism & that biological procedure stabilize the environment.
Using an Optical Bench This applet permits users to simulate standard optic elements that is lens, mirror, dielectrics, sources, apertures and observe the ways in which light r
In an expression ½kx2 for the potential energy accumulates in the spring what does the x represent? Answer: Quite frequently we consider there to be an object at
Water accelerated by a nozzle to 20 m/s strikes the vertical back surface of a cart moving horizontally at a constant velocity of 5 m/s in the flow direction. The mass flow rate of
(a) With the help of a labelled diagram, define the principle and working of a moving coil galvanometer. (b) Two parallel coaxial circular coils of equal radius 'R' and equal nu
If the particles of a medium vibrate in the direction of wave motion the wave is known as longitudinal. a) It goes in the form of compression and rarefaction. b) A
i. Open System - Here the system boundary is like energy and matter can enter or leave the system freely. Infect the system boundary here is imaginary. ii.Closed System - Here t
Q. During lightning, it is safer to sit inside car than in an open ground. Why? The metal body of the car offers electrostatic shielding where the electric field is zero. Thro
does lights of different wavelengths help us to see different colour
Wiedemann-Franz law: The ratio of thermal conductivity of a particular pure metal to its electrical conductivity is approximately constant for any given temperature. This law
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