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Electrons are emitted from a photosensitive surface when it is illuminated by green light but electron emission does not take place by yellow light. Will the electrons be emitted when the surface is illuminated by (i) red light, and (ii) blue light.
De?ne reduction potential and oxidation potential. Reduction potential of a metal is the measure of tendency of a metallic electrode to gain electrons when it is in contact wit
Hexane is throttled from 18.15 bar, 507.6 K to 0.1 bar. Determine the temperature at the exit and the entropy generation. Steam is cooled under constant pressure from 400 o C,
The emf of the driver cell of a potentiometer is 2V & its internal resistance is negligible . The length of the potentiometer wire is 100cm & resistance is 5 ohm.How much resistanc
The control lever is subject to a clockwise moment of P26 N.m exerted by its shaft at A and is designed to operate with a force of P27 N. The resultant of the couple and the force
write bernoulli,s equation using pressure,energy,and heads.
why we use he-ni laser light in michelson interferometer
(1) The current in a super conductor once set up continuous for a very long time without attenuations. (2) The permeability of a super conducto
please explain newtons first law of motion
An α particle is a positively charged particle. Rutherford observed the behaviour of these particles when they approach the interior of the atoms as shown in fig. Rutherford ob
A model to show the apparent path of the sun among the stars The signs of the zodiac are drawn in the correct order on a strip of paper about 60 cm long and 8 cm wide. The ends
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