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Question 1 of 5
1. Question
4 pointsA student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it? [JEE MAIN 2014]
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Question 2 of 5
2. Question
4 pointsThe dimensional formula for Reynold’s number is [MH CET 2014]
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Question 3 of 5
3. Question
4 pointsIn an experiment four quantities a, b, c and d are measured with percentage error 1%, 2%, 3% and 4% respectively. Quantity P is calculated as follows : . % error in P is [NEET UG 2013]
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Question 4 of 5
4. Question
4 pointsThe density of a solid ball is to be determined in an experiment. The diameter of the ball is measured with a screw gauge, whose pitch is 0.5 mm and there are 50 divisions on the circular scale. The reading on the main scale is 2.5 mm and that on the circular scale is 20 divisions. If the measured mass of the ball has a relative error of 2%, the relative percentage error in the density is [IIT JEE 2011]
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Question 5 of 5
5. Question
4 pointsWhich of the following units denotes the dimensions ML^{2}/Q^{2}, where Q denotes the electric charge? [AIEEE 2006]
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