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Photoelectric electricity is produced directly from solar energy when which following are absorbed in a semiconductor to create an electric current?
a) Protons
b) Electrons
c) Neutrons
d) Photons
Ans- Photons
Why because it is not a source as Li-ion battery. If we want to measure the voltage(build in voltage) with in the diode we have to use the external source. We can''t directly measu
A plane monochromatic wave travelling in a homogeneous medium goes into a denser medium. What are the changes in (i) Frequency (ii) amplitude (iii) speed of propagation & (iv) Phas
In the arrangement shown in figure, an object can be hung from a string (with linear mass density µ = 0.002 00 kg/m) that passes over a light pulley. The string is connected to a v
YES GRAVITY CAN BAND LIGHT e.g. GRAVITY OF BACK HOLE IS VERY STRONG
Induced electric currents can be explained using which of the following laws? a) Gauss's Law b) Faraday's Law c) Ohm's Law d) Ampere's Law Ans: Induced e
State perpendicular axis theorem. a) Explain impulse-momentum principle. b) Verify the equation of motion for translation
Two waves of equal frequency have amplitudes 2 units and 3 units respectively. When they superpose coherently the intensity of the resultant wave is I 1 . The intens
It is the opposition offered by the material of the flux. Reluctance α mean length of flux path and reluctance α 1/cross section A Reluctance=1/μ 0 μ r A Here μ 0 a
The scattering of a photon by an electron is known as Compton Effect. The momentum and energy is preserved. Scattered photon will have less power as compare to incident photon (les
i need an assignment on spectrophotometer
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