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A manufacturer of light bulbs advertises that its 55-W bulb, which produces 800.0 lm of light output, gives almost the similar light as a 60.0-W bulb with an energy savings.
The 60.0-W bulb produces 840.0 lm.
a. Which bulb most efficiently changes electric energy to light?
What are single ends? The extreme fiber optics conductor is farthest from the illuminator. The bit which emits light or the end that lights up.
Derive a mathematical expression for the magnetic induction at a point on the axial line of a bar magnet. Derive a mathematical expression for the magnetic induction at a point
Q. How do you compute tensile strength? Answer:- Tensile strength is not actually calculated it's measured. It is classified as the point at which a sample of material fai
RUTHERFORD'S ATOMIC MODEL:- Rutherford proposed that all the positive charge and mass of the atom was concentrated in a small central region which is called the nucleus.This mo
It is the molecular weight of a substance expressed in grams ; the basic unit of amount of substance adopted under the Systeme International d''Unites.
Melinex film can be interleaved with paper. The material is then silvered. It is the rolled to form capacitor. High voltage capacitors are sealed to avoid corona. These capacitors
It is an instrument used to detect small current passing by it by showing deflection. Galvanometers are of dissimilar types e.g. moving coil galvanometer, moving magnet galvanomete
Two resistors, of resistance 3 and 6, are connected in parallel across a battery having a voltage of 12V. Determine (a) The total circuit resistance and (b) The current ?
There are several conditions for formation of cat ions ? Low Ionisational potential ? Lesser Charge ? More atomic size of atoms forms cations easily ? Ions having Inert
Diffraction is a phenomenon that is severely associated with light. That is to utter that light and only light undergoes diffraction. (By light here we denote any form of electroma
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