Qualification > Sciences
ALL PHYSICS DOUBTS - POST HERE !!
rhea:
can some1 explain vernier calipers
Raywin:
--- Quote from: rhea on May 25, 2010, 03:25:50 pm ---can some1 explain vernier calipers
--- End quote ---
Its an instrument that is used to measure (accurately) the thickness of something REALLY small like a coin which for example a ruler cannot measure accurately.
Ghost Of Highbury:
--- Quote from: Raywin on May 25, 2010, 03:25:31 pm ---Thanks a lot!! :D and another thing wht is the relationship between the resistance of a wire and its length and diameter?
--- End quote ---
The resistance of the wire is inversely proportional to the diameter, better to say the cross-sectional area and directly proportional to the length;
Vin:
Aadi two ques for you .. either im too dumb or the ms is wrong ..
for the first one .. i know its not in the 2010 syllabus i jus wanna know..
fo the 2nd .. i knoe tht the resistance increases in dark but y does pd increase ??..i ve been trying to figure out since long now!
Raywin:
--- Quote from: A@di on May 25, 2010, 03:29:37 pm ---The resistance of the wire is inversely proportional to the diameter, better to say the cross-sectional area and directly proportional to the length;
--- End quote ---
Thank you once again! :D :D ;D
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