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Working of Electric Geyser:
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simply in our homes ,, in electric geysers electric energy is converted into heat energy ,, when cold water enters into the geyser through inlet then it is heated into a container inside the geyser,,when it is heated connection of electricity is cut off inside the geyser,,
</em><em>then this hot water comes out through a outlet ... :)</em>
Answer:
<u>Principal</u><u> </u><u>focus</u><u> </u><u>of</u><u> </u><u>concav</u><u>e</u><u> </u><u>lens</u><u> </u><u>-</u><u> </u>
★ The point at which rays parallel to principal axis coming from infinity appear to converge after being refracted from concave lens is called the principal focus of concave lens.
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• <u>Additional</u><u> information</u><u> </u><u>-</u><u> </u>
★ Principal focus - A number of rays parallel to the principal axis after reflection from a concave mirror meet at a point on the principal axis or appear to come from a point after reflection from a convex mirror on the principal axis. This is called principal focus.
Option number three is correct energy can be transformed and moved and released but it can't be destroyed and doesn't disappear.
Catastrophic events are sudden, natural or man-made, situations where change & destruction occur. All catastrophic events are the Earth's way of maintaining equilibrium during change.
D) The Sun would revolve around the Earth. 8. In the geocentric model (the Earth at the center of the universe), which motion would occur? B) the Sun in circular orbits C) Earth in slightly elliptical orbits D) Earth in circular orbits 9.
