Significant Figures & Order of Magnitude · Significant figures in calculations
Keeping the significant figures in view, the sum of the physical quantities 52.01 m, 153.2 m and 0.123 m is:
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Answer: (a)
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Significant Figures & Order of Magnitude · Significant figures in calculations
Each side of a metallic cube of mass 5.580 kg is measured to the 9.0 cm. Keeping the significant figures in view, the density of the material of the cube can be best expressed as where the value of is:
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Answer: (d)
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Significant Figures & Order of Magnitude · Significant figures in calculations
For an experimental expression , where all the digits are significant. Then to report the value of we should write
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Answer: (d)
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Significant Figures & Order of Magnitude · Significant figures in calculations
A person measures mass of 3 different particles as and 0.125 g. According to the rules for arithmetic operations with significant figures, the addition of the masses of 3 particles will be.
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Answer: (d)
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Significant Figures & Order of Magnitude · Counting significant figures
Match List - I with List - II.
Choose the correct answer from the options given below:
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Answer: (a)
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Significant Figures & Order of Magnitude · Order of magnitude
In an expression :
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Answer: (b)
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Significant Figures & Order of Magnitude · Significant figures in calculations
Time periods of oscillation of the same simple pendulum measured using four different measuring clocks were recorded as and . The arithmetic mean of these readings in correct significant figure is:
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Answer: (b)
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Significant Figures & Order of Magnitude · Significant figures in calculations
The area of a rectangular field (in m2) of length 55.3 m and breadth 25 m after rounding off the value for correct significant digits is
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Answer: (d)
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Significant Figures & Order of Magnitude · Significant figures in calculations
Taking into account of the significant figures, what is the value of ?
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Answer: (a)
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Significant Figures & Order of Magnitude · Significant figures in calculations
For the four sets of three measured physical quantities as given below. Which of the following options is correct?
(i) A1 = 24.36, B1 = 0.0724, C1 = 256.2
(ii) A2 = 24.44, B2 = 16.082, C2 = 240.2
(iii) A3 = 25.2, B3 = 19.2812, C3 = 236.183
(iv) A4 = 25, B4 = 236.191, C4 = 19.5
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Answer: (d)
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Significant Figures & Order of Magnitude · Significant figures in calculations
The area of a square is 5.29 cm2. The area of 7 such squares taking into account the significant figures is :-
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Answer: (a)
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Significant Figures & Order of Magnitude · Order of magnitude
Match List - I (Event) with List - II (order of the time interval for happening of the event) and select
the correct option from the options given below the lists.
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Answer: (a)
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Significant Figures & Order of Magnitude · Counting significant figures
The respective number of significant figures for the numbers 23.023, 0.0003 and 2.1 10–3 are
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Answer: (a)
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Significant Figures & Order of Magnitude · Significant figures in calculations
A body of mass m = 3.513 kg is moving along the x-axis with a speed of 5.00 ms−1. The magnitude of its momentum is recorded as
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Answer: (a)
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