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In a Wheatstone bridge PQRS, a galvanometer is connected among Q and S and a voltage source between P and R.
An unknown resistor Rx is connected among P and Q.
When the bridge is balanced, the resistance among Q and R is 200Ω, that between R and S is 10Ω and that among S and P is 150Ω.
Calculate the value of Rx .
Derive an expression for the velocity of transerve wave in stretched uniform string
A horizontal power line carries a current of 6110 A from south to north. Earth's magnetic field (86.8 mT) is directed toward the north and is inclined downward at 70 degrees to the
Verify the value and tolerance of a resistor having a colour coding of: blue-grey-orange- red Determine the value and tolerance of a resistor having a colour coding of: yellow-
The frequency of a wave is 50 Hertz and its wavelength is 25 meters. What is the velocity of this wave? Ans: The velocity of given wave is 1250 meters/second.
Explain the absorption and emission transitions of A and B coefficients of Einstein. Assume that N 1 and N 2 be the number of atoms per unit volume along with energy E 1 and
Sound waves are being used to determine the depth of a freshwater lake, as shown in the figure below. If the water is 25°C and it takes 1.2 s for the echo to return to the sens
KINEMATICS II 1. The concept of the derivative of the function is exceptionally important. The derivative shows that how fast the function changes when its argument is changed.
Who shared the Nobel Prize in Physics in 1909 with Guglielmo Marconi for his contribution to the development of wireless telegraphy? Ans: (Carl Ferdinand) Braun shared the N
What are lens aberrations? Give reasons for them. Illustrate the working of a simple microscope and give a mathematical expression for its magnifying power.
A board that is 1.5 m long is supported in two places. If the force exerted by the first support is 25 N and the forced exerted by the second is 62 N. what is the mass of t
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