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It having of an evacuated glass or quartz bulb having anode A and cathode C. The cathode is semi-cylindrical solid on which a thin layer of photo-sensitive material is coated.
When light incident on the cathode, it produces photo-electrons which are attracted by the anode. The photo-electrons forms a small current which flows by the external circuit.
A tank is filled up to a height 2H by a liquid and is placed on a platform of height H from the ground .the distance x from the ground where a small hole is punched to get maximum
sharpness of resonance
Role of Magnetic field in generating ultrasonic waves Magnetic field is applied parallel to the length of a ferromagnetic rod made of material as like iron or nickel, a small e
Describe how tunneling takes place When tunnel diode is forward biased, its initial behaviour is similar to that when it's reverse biased. Now, some of the fille
what is the importance of si unit
Photoelectric electricity is produced directly from solar energy when which following are absorbed in a semiconductor to create an electric current? a) Protons b) Electron
why is friction necessary
Refraction of Light: When a ray of light in single medium meets the surface of second medium, a part of the ray enters in the second medium; this phenomenon is called as refrac
High resistive materials: The materials which have their resistivity 10 -8 to 10 -6 ohm-m come under this category. These materials are used for making resistance elements fo
(UNIFORM VELOCITY) (i) When instantaneous velocity and average velocity of a body are equivalent, then the body moves with uniform velocity. (ii When instantaneous velocity
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