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Define the terms threshold frequency and stopping potential in relation to the phenomenon of photoelectric effect. How is the photoelectric current affected on enhancing the
(i) frequency
(ii) intensity of the incident radiations and why?
D- Ultrasonic wave Heating These waves are different from electromagnetic waves . It produces mechanical vibration inside tissue. It is the same as the sound waves but it has
What is proton-neutron hypothesis? Explain it?
The line density of charge in a wire is 0.20 Cm-1. If this wire is symmetrically enclosed along its length by a cylindrical surface of radius 1.0 m and length 1.5 m, calculate
The experimental set-up for producing Newton's ring is shown in fig. (A). A plane-convex lenses L of large radius of curvature with its convexities is placed on a plane glass plate
Q. Give the drawbacks of Sommerfeld’s atom model? Drawbacks of Sommerfeld's atom model: (i) It couldn't explain the distribution and arrangement of electrons in atoms.
The light passing through a quarter wave plate is analysed by a rotating Nicol prism. It is get that the intensity of the emergent light beam from the rotating Nicol prism becomes
How do we experimentally know that MOSEFT device is working?
time dependent magnetic flux that is changing from t=0 to t=torque varies as the flux is passing through stationary coil that has electrical resistance R. Find the amount of heat e
Light is quantized. Photons are light quanta. It has zero REST mass. Therefore, it always travels at maximum speed permitted by relativity.
It is based on the photovoltaic effect. One of the semiconductor regions is made so thin that the light incident on it reaches the p-n junction and gets absorbed. It changes solar
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