Question

II. Short Answer Questions
1. Briefly explain the types of physical
quantities.
2. How will you measure the diameter of
the Moon using parallax method?
3. Write the rules for determining
significant figures.​

Answer 1

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Question

What is significant figure. write rule to determine the significant figure

Answer

(i) All non-zero digits are significant

(ii) All zeros between two non-zero digits are significant

(iii) All zeros to the right of a non-zero digit but to the left of a decimal point are significant.

(iv) a) The number without a decimal point, the terminal or trailing zero(s) are not significant.

b) All zeros are significant if they come from a measurement

(v)If the number is less than 1, the zero (s) on the right of the decimal point but to left of the first non-zero digit are not significant.

(vi) All zeros to the right of a decimal point and to the right of non-zero digit are significant.

(vii) The number of significant figures does not depend on the system of units used.

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