1. Write short answers for the following:
1. Name the three fundamental units -
2. Which measuring device is used by tailors -
w 3. What do you understand by parallax error -
4. Give two ways for proper use of scale -
Answers
Answer:
1.The meter (symbol: m), used to measure length.
The kilogram (symbol: kg), used to measure mass.
The second (symbol: s), used to measure time.
2.A sewing gauge is a small useful tool with a sliding guide to mark out and measure small distances.
3.The error/displacement caused in in the apparent position of the object due to the viewing angle that is other than the angle that is perpendicular to the object.
1. The meter (symbol: m), used to measure length.
The kilogram (symbol: kg), used to measure mass.
The second (symbol: s), used to measure time.
The ampere (symbol: A), used to measure electric current.
The kelvin (symbol: K), used to measure temperature
2. Measuring tape
Measuring tape is used by a tailor to measure the length of cloth.
3. The error/displacement caused in in the apparent position of the object due to the viewing angle that is other than the angle that is perpendicular to the object.
4. The scale of a map is the ratio of a distance on the map to the corresponding distance on the ground. This simple concept is complicated by the curvature of the Earth's surface, which forces scale to vary across a map. Because of this variation, the concept of scale becomes meaningful in two distinct ways.