Plz tell the answer of this question, only if u knw the solution. Otherwise just don't waste my points. (Irrelevant answers or comments will be reported).{This question is of physics class 9}
Answers
Answer :-
i) It is clear from the figure that figure A has lesser scales then figure B.
So, if we want smaller measurements, we can't use the scale A as it will show many errors while we can use scale B to measure smaller measurements.
Hence, Scale B can measure Length more accurately.
ii) Light year is a unit of distance.
Light year is the distance travelled by light rays in the time period of a one whole year.
Additional information -
Physical quantities - The quantites which can be measured by an instrument are called physical quantities.
Types :-
Fundamental quantities :- Quantites which does not depend on any other quantity and requires only magnitude are called Fundamental quantites .
Derived quantities - Quantities which depend on other quantity and require both magnitude and direction are called derived quantities.
( b) is the correct ans
Explanation:
are u stunding in fatima convent