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If the length of a square is 2 cm, then ...

If the length of a square is 2 cm, then its area in SI system is

A

`4cm^2`

B

`4xx10^4m^2`

C

`4xx10^-4m^2`

D

`40cm^2`

Text Solution

Verified by Experts

The correct Answer is:
C
Area= Length `xx` Length
`=2xx10^(-2)xx2xx10^(-2)`
`=4xx10^(-4)m^2`
Hence, the correct option is (c)
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PEARSON IIT JEE FOUNDATION-MEASUREMENTS AND MOTION-TEST YOUR CONCEPTS (VERY SHORT ANSWER TYPE QUESTIONS)
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  2. Relation between length (l), area (A), volume (V) is

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  3. If the length of a square is 2 cm, then its area in SI system is

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  4. The least measurement of time in a wall clock is

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  5. The thermometer used to measure the minimum and maximum temperatures o...

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  6. The short hand of a clock is at 12 and the minutes hand is 3, then th...

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  7. The relations between kelvin and celsius scales is K = C + 273. The t...

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  9. The angle between the minutes hand and hours hand in a clock, at 12:30...

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  10. Temperature is a quantity.

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  11. Time is a fundamental quantity

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  12. The device used to measure temperature is

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  13. Which of the following units of temperature is not followed by the wor...

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  14. If a body does not change its position, it must be in a state of .

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  15. The CGS unit of distance covered is .

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  16. Acceleration is measured in in SI system.

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  17. A passenger in a moving bus appears to be in a state of rest with resp...

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  18. A body is said to be in a state of motion if it changes its .

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  19. SI unit of velocity is (i) m/s (ii) m//s^(2) (iii) m (iv) s

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  20. Which of the following is different from the others?

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