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A resistor of 8Ω is connected in parallel with one of 12Ω and the combination is connected in series with one of 4Ω.
A p.d. of 10V is applied to the circuit.
The 8Ω resistor is now placed across the 4Ω resistor.
Find the p.d. needed to send the same current through the 8Ω resistor.
A compound microscope with an objective of 1.0 cm focal length and an eye-piece of 2.0 cm focal length has a tube length of 20 cm. Measure the magnifying power of the microscope, i
Q. A screen is placed 90 cm from an object. The image of the object on the screen is formed by a convex lens at two different locations separated by 20cm. Determine the focal lengt
Example 1 - A bird feeder in your yard has a total mass of 3.0 kilograms and is supported as shown. What is the force on the top wire? The bird feeder is not falling so the forc
A ray of light in air is occurrence upon a flat piece of glass. How acts the path that the light travels along when it is in the glass compare with the path in the air?
liquefication of gases
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Explain Generation of electrical energy Generation of electrical energy : The conversion of energy available in dissimilar forms in nature into electrical energy is called as
What are lens aberrations? Give reasons for them. Illustrate the working of a simple microscope and give a mathematical expression for its magnifying power.
Determine the working of N- Channel JFET In N-channel JFET, two p regions are connected with each other (internally or externally) and are called gate (G). Ohmic contacts are
Atoms are particles of elements, substances that could not break down further. In examining atomic structure through, we have to clarify this statement. An atom cannot be broken do
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