21.
ü) Lights of red colour are used for danger signals.
Two wires A and B are of equal length and have equal resistance. If the resistivity of A is more
than that of B which wire is thicker and why? For the electric circuit given below calculate
Current in each resistor
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Answer:
light of red colour are used for danger signal because red colour scatters the least and can be seen on foggy days
B is thicker because resistance is inversely proportional to the area of cross-section
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Decomposers feed on dead things: dead plant materials such as leaf litter and wood, animal carcasses, and feces. They perform a valuable service as Earth's cleanup crew. Without decomposers, dead leaves, dead insects, and dead animals would pile up everywhere.Jan 8, 2020
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