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The temperature of a body is measured indirectly by making use of the fact that certain physical property of a substance changes linearly with the temperature
If the value of the thermometric property X differ linearly with temperature T, then selecting the simplest possible relationship
T(x) = aX + b
Where the constants b and a must be measured. This linear scale seems that each interval of temperature corresponds to the similar change in the value of the thermometric property. To measure a temperature on this scale two calibration points are select whose temperatures are described as T1 and T2 arbitrarily. The relative thermometric property X1 and X2 are measured..
Q. A capacitor of capacitance 2 μF is in an ac circuit of 1000 Hz. Compute the reactance of it. Solution: Capacitive reactance XC = 1 / ω C = 1 / 2π ν C =
In the Compton effect, a photon of wavelength l collides with a stationary electron. The wavelength of the emitted photon is: a) longer than l b) shorter than l c)
calour formed in pure and impure spectrum
Working of a galbanometer?
michelson interferometer
A scooterist is racing at a speed of 72 km per hour. If the radius of the wheel is 20 cm, find the angular speed of the wheels. Ans) 72kmph=20m/s 20cm=0.2m; v=rw w=v/r w=20/0
A current transformer has two turns on the primary winding and a secondary winding of 260 turns. The secondary winding is connected to an ammeter with a resistance of 0.2.The
Q. Show Constant Moment Arm? The simplest case is that of a point mass, and the moment of inertia can be immediately written as I = mR 2 ,
The Monkey and Zookeeper There is an attractive monkey down at the zoo. The monkey spends most of its day execution from a limb of a tree. The zookeeper feeds the monkey throug
Hubble's law (E.P. Hubble; 1925): A relationship discovered among distance & radial velocity. Further away a galaxy is away from is, the quicker it is receding away from us. T
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