![]() Measurement is the process of comparison of the given physical quantity with the known standard quantity of the same nature. Reason (R) : The distance travelled by the light in one year is one light year.ĭistance between two celestial bodies is measured in terms of unit. (b) Both A and R are true and R is the correct reasonĪssertion (A) : Distance between two celestial bodies is measured in terms of light year. Reason (R) : To convert a temperature on the Celsius scale we have to add 273 to the given temperature. For our convenience we take it as 273K after rounding off the decimal. ![]() (a) Both A and R are true but R is not the correct reasonĪssertion (A) : 0° C = 273.16 K. Reason (R) : In everyday life, we use the term weight instead of mass. (b) Both A and R are true and R is the correct reason.Īssertion (A) : The scientifically correct expression is “The mass of the bag is 10 kg” (a) Both A and R are true but R is not the correct reason. With the help of vernier caliper we can have an accuracy of 0.1 mm and with screw gauge we can have an accuracy of 0.01 mm. One Celsius degree is an interval of IK and zero degree Celsius is 273.15 K.Ħ. A physical balance is more sensitive than a beam balance.ĥ. In everyday life, we use the term weight instead of mass.Ĥ. Kilometre is one of the SI units of measurement.ģ. ![]() The SI unit of electric current is kilogram.Ĭorrect statement: The SI unit of electric current is ampere.Ģ. A physical balance measures small differences in mass up to ………………. Radius of a thin wire is measured by …………………ĥ. Thickness of a cricket ball is measured by …………….Ĥ. Which among the following is not a device to measure mass?ģ. Rulers, measuring tapes and metre scales are used to measure
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