Question

Which is correct method of representing the units?
(1) KWH
(3) ms-1

(2) Newton meter

(4) Newton sec

Answer 1

Answer:

KWH is the correct ans

Explanation:

it tells correct ans of units

Answer 2

CORRECT QUESTION

Which is the correct method of representing the units?

(1) KWH

(3) ms⁻¹

(2) Newton meter

(4) Newton sec

ANSWER

The correct method of representing units is - option(3) ms⁻¹.

Explanation

• In physics, a Unit is the quantity of a magnitude which is used to calculate the magnitude of the quantities of similar types.
• Physical quantity = numerical value × unit
• Kilowatt-hour is the SI unit of energy which is equal to 1-kilo watt of power per hour it is written in a symbolized form as 'kWh'.
• Hence, Option (1) is incorrect
• Speed can be defined as the rate of change of distance with respect to time. The SI unit of speed is the meter per second, which is written in a symbolized form as ms⁻¹.
• Hence, option (2) is correct.
• The SI unit is always written in lowercase. Therefore the SI unit of work done is the 'newton meter'.
• The SI unit of impulse is 'newton second'.

Hence, The correct answer is option (3)

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