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A zinc plate is attached to the knob of a negatively charged electroscope.
What will occur to the leaves of the electroscope when ultraviolet light is shown on the zinc plate. Will the leaves:
a) collapse at once
b) Gradually come together
c) Gradually spread further apart
d) Remain unaffected
Ans- Gradually come together
An aereplane has velocity 500m/s with respect to air. Wind blows with velocity 20m/s along north. Then in what direction pilot should be heading so as to go along North-east direct
How a CPH products? Answer; no time has passing of a CPH. Thus, CPH exists and never decay.
A capacitor is to be constructed so that its capacitance is 0.2µF and to take a p.d. of 1.25kV across its terminals. The dielectric is to be mica which, after allowing a safet
When the wavelength of wave remains unchanged, the scattering is known as elastic.
A weakly guiding optical fibre propagates just two bound modes with scalar transverse electric fields ψ 1 (x,y) and ψ 2 (x,y), and propagation constants β1 and β2, respectively. At
define opto isolators?
The earth "spins" (rotates) on its axis based on the action of the materials that accreted to form it, and also on any large collisions it might have undergone. Like the one in the
a. Measure the force among two linear, parallel, long conductors carrying currents in opposite direction. b. Measure self inductances and mutual inductances among two co-axial s
In the SI system of measure, what is the unit of capacitance? Ans: In the SI system of measure, farad is the unit of capacitance.
What do you mean by Doppler's shift? Derive a mathematical expression for the apparent frequency heard by a moving listener when the source of sound is at rest. What is the effe
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