Question

A question refer to the attachment !

Chapter :- Physical Quantities and measurement ​

Answer 1

Answer:

Explanation:

A- 2.9

B- 3

C- 3.1

Answer 2

SOLUTION :-

(a) Length of stick $\sf PQ$ from $\sf A$ is $\sf \blue {3.4 \: cm}$, from $\sf B$ is $\sf \blue {3.2 \: cm}$ and from $\sf C$ is $\sf \blue{3.00\: cm}$.

(b) $\sf B$ is the correct position of the eye because $\sf B$ eye is looking straight to the object and the correct length of the stick $\sf PQ$ is $\sf \blue{3.2 \: cm}$.

KNOW MORE :-

➩ What is physical quantities and measurements?

☞ Physical quantities are a characteristic or property of an object that can be measured or calculated from other measurements.

☞ Units are standards for expressing and comparing the measurement of physical quantities.

☞ All units can be expressed as combinations of four fundamental units.