Ques. A force F is applied on a square plate of side L. If percentage error in determination of L is 2% and that in F is 4%, what is permissible error in pressure?
(a) 2%
(b) 4%
(c) 6%
(d) 8%
Ques. The significant figure in 300 . 500 are
(a) 6
(b) 5
(c) 4
(d) 2
Related: Discrete Maths Questions and answers
Ques. After rounding off the number 9637 to 2 significant digits, the value becomes
(a) 9600
(b) 9630
(c) 9640
(d) 9700
Ques. The length of a rod is (10.15 0.05) cm. What is the length of two such rods?
(a) (20.30 ± 0.05) cm
(b) (20.30 ± 0.05) cm
(c) (20.30 ± 0.10) cm
(d) (20.3 ± 0.10) cm
Related: Mean, Median, Mode questions with answers
Ques. Which of the following numerical values have three significant figures?
(a) 3.033
(b) 0.030
(c) 30.30
(d) 0.300
Ques. The number of significant figures in 0.00230 is
(a) 5
(b) 4
(c) 3
(d) None
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Ques. An experiment measures quantities a, b and c, and X is calculated from X = ab2 / c3. If the percentage error in a, b, c are ± 1%, ± 3% and ± 2% respectively, the percentage error in X will be
(a) ± 13%
(b) ± 7%
(c) ± 4%
(d) ± 1%
Ques. When 97.52 is divided by 2.54, the correct result is
(a) 38.3937
(b) 38.394
(c) 38.39
(d) 38.4
Related: Matrices and Determinants questions and answers
Ques. The least count of a stop watch is 1/5 second. The time of 20 oscillations of a pendulum is measured to be 25 seconds. The minimum percentage error in the measurement of time will be
(a) 0.1%
(b) 8%
(c) 1.8%
(d) 0.8%
