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प्रश्न
Select the correct alternative:
A metre ruler is graduated in:
विकल्प
m
cm
mm
km
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उत्तर
mm
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संबंधित प्रश्न
Fill in the blank
Distance travelled d = ________ × time t
Select the correct alternative
A boy travels a distance 150 m in 1 minute. His speed is
Express 15 m s-1 in km h-1.
Answer the following in short.
Which institution in the world maintains the guidelines for using the SI units correctly?
State if the following statement is true or false. Correct the statement if it is false.
1 m = 10,000 cm3
Answer the following in short.
What is parallax error?
Solve the following numerical problem.
The rainfall in a city on each day of a week is recorded below. Find the average rainfall for the week.
| day | Mon | Tue | Wed | Thurs | Fri | Sat | Sun |
|
Rainfall |
1.2 | 10.3 | 5.5 | 0.0 | 13.5 | 7.0 | 1.0 |
What is the fundamental quantity? Give examples.
A physical quantity A is dependent on other four physical quantities p, q, r and s as given below A = `sqrt("pq"/("r"^2"s"^3))`. The percentage error of measurement in p, q, r and s are 1%, 3%, 0.5% and 0.33% respectively, then the maximum percentage error in A is ______ %.
The density of a material in SI unit is 128 kg m-3. In certain units in which the unit of length is 25 cm and the unit of mass is 50 g, the numerical value of density of the material is _____.
