Question

40.
of the
In the context of accuracy of measurement
and significant figures in expressing
results of experiment, which
following is/are correct
(1) Out of the two measurements 50.14 cm
and 0.00025 ampere, the first one has
greater accuracy
(2) If one travels 478 km by rail and 397 m.
by road, the total distance travelled is
478 km.
(a) Only (1) is correct
(b) Only (2) is correct
(c) Both are correct
(d) None of them is correct.



c is correct​

Answer 1

Answer:

Significant figures are the number of digits in a value, often a measurement, that contribute to the degree of accuracy of the value. We start counting significant figures at the first non-zero digit.

Since for 50.14cm

Now, the significant number=4

and for 0.00025

Significant number =2

Both are correct

Explanation:

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Answer 2

here is your answer for 1 one