Question

which of the following statement is/are correct
(1)symbol of unit are written in singular
(2)basic unit of speed is km/h
(3)Both the above are correct
(4)none of the above is correct
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Answer 1

Answer

1) Symbols of units are written in singular.

$\rule{200}2$

Explanation

1) The symbols for the SI units are written in singular form instead of plural form. Example: 10m (meter), 2kg (kilograms), 15s (seconds), 5J (joule) etc.

All unit (physical quantity) names are written in small letters (kilogram, metre, seconds etc.) except Celsius, it is always written in Capital letters.

Therefore, the given option is correct.

2) The basic unit of distance is m and that of time is s. Therefore, the basic unit of speed is m/s not km/hr. So, the given option is wrong.

3 & 4) 1st option is correct. So, this option is also wrong.

Answer 2

Answer:

option 1

Explanation:

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