Why is it dangerous to stand in the upper deck of a double decker bus?
Why is it dangerous to stand in the upper deck of a double decker bus?
Asked Sona
Raja Bhargab Answers:
“a body is said to be more stable when its CENTER OF GRAVITY is kept as low as possible. In a double decker bus , the c.g. of our body is obviously at higher place than the lower deck.In addition , if we stand the c.g. goes the higher , which will lead for a great imballance to be followed by a severe fall off. Moreover,when the bus moves or jerks,in lower deck,the moment of deflecting force is tolerable . But in the upper deck,it’s tremendously high”
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Resistance and Resistivity
Simran Asked
“Two wires A and B of equal lengths,different cross-sectional areas and made of same metal a)name the property which is same for both the wires. b)name the property which is different for both the wires”
Answer:
Since both the wires are of same metal, the resistivity will be same for both whereas since the dimensions (Area of cross section here) are different, the resistance will be different
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Optics
Rajat asked:
“when we exchange the lenses of compound microscope, then why it does not act as a telescope?”
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