Q. Which of these is a method of indirect measurement?

इनमें से कौन अप्रत्यक्ष माप की विधि है?

A
Using a scale
एक पैमाने का उपयोग करना
B
Using vernier caliper
वर्नियर कैलीपर का उपयोग करना
C
Using screw gauge
स्क्रू गेज का उपयोग करना
D
Using formulas
सूत्रों का उपयोग करना

Explanation

Indirect measurement involves using known relationships (formulas) to compute a quantity, instead of measuring it directly.

E.g., speed = distance / time
All other options involve direct measurement.

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