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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?
is it the current or the voltage which is responsible for electrc shock?
Q. What is dual character of light? Light behaves as particles of energy in the higher energy region as well as as waves in the lower energy region.
Example of state function
Ideal gas laws Boyle's law At constant temperature, the pressure of an ideal gas is inversely proportional to the volume of the gas Charles' law At constant
An atom which has lost one electron would be: (1) Negatively charged () Positively charged (3) Electrically neutral (4) Carry double positive charge Ans: Elec
Field Lines A field line is a locus in which is described through a vector field and a beginning location within the field. Field lines are meaningful for visualizing vector f
A cheetah can reach a top speed of 27.8 m/s in 5.2 s. What is the cheetah's average acceleration?
Which quantity is unchanged during refraction of light? Describe critical angle. Show an application of total internal reflection.
luxon: A particle which solely travels at c (the speed of light in vacuum). All of the luxons have a rest mass of zero exactly. Though they are massless, luxons carry momentum
Metallization: It is the process of giving electrical connections among different parts of the circuit. Aluminium is commonly used. It has a high electrical conductivity and a low
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