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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?
defination of quantom theory
if you drop a ball from a tall building, after 4.2 seconds what is its speed in m/s?
Q. Illustrate how do you find the refractive index of a liquid by using total internal reflection? Answer:- Using Snell's law n (1) = (n (2) x sin angle (2)) / sin angl
Q. Will a DC motor really produce voltage if it is spun in reverse? Answer:- It will produce voltage if you spin it forwards too. The merely difference between a DC motor
An x-ray photon collides with a free electron, and the photon is scattered. During this collision there is conservation of: a) Momentum but not energy b) Neither momentu
Q. Helpful Henry's car is pushing Flat-tire Fred's car to the car shop. While the cars are accelerating up to 15 miles/hour Helpful Henry needs to push Fred's car with 60 N of for
How can we ger plane polarised light??
what type of transformer we use in this
Beat period : The time interval among two successive beats is called as beat period. Beat frequency : The number of beats given per second is called as beat frequency.
about beam intersection in gama and alpha beam?
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