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(i) It has of continuously varying wavelengths in a exact wavelength range.
(ii) It is given by solids, liquids and highly compressed gases heated to high temperature.
(iii) E.g. Light from the sun, candle flame, filament of incandescent bulb etc.
When a certain beam of light falls upon a metal surface, it ejects photoelectrons from it. The number of photoelectrons ejected per second by the beam of light depends upon on
1. A child pulls a toy car weighing 0.20 kg across a smooth floor by means of a string attached to it. If the string makes an angle of 60° to the floor and the child pulls with a f
Le Chatelier's principle (H. Le Chatelier; 1888) If a system is in equilibrium, then any change imposed onto the system tends to shift the equilibrium to decrease the effect of
How nikol prisim can use as polarizer and analyzer
Figure shows a simple model of spring-mass system. The mass is released from the rest with the springs un-stretched. It's downward acceleration is a=9.81 - 15.24y m/s 2 where y is
Regard as a pair of two identical capacitors. In which situation is the capacitance of the pair greater? Ans: The effective capacitance of a couple of capacitors in series
Minimum amount of light for low vision If 90 photons enter the eye ,10 or less are actually absorbed in photoreceptors. About 3% are reflected at the surface of the corne
Kelvin : Kelvin is the fundamental unit of temperature. It has quantity of zero where the molecular activity of gases ceases. Mole : Mole is the fundamental unit of quantity of
Q. What do you mean by Ant reflecting Films? When a beam of light travels normally from a medium of refractive index µ 2 to a medium of refractive index µ 1 , a part of light
the magnetic field at a dictance of 2cm from the axis of a straight conductor carrying current is 12mT.Find the currentin the conductor?
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