**Units and Measurement – Solutions**

**1. Fill in the blanks**

**(a) The volume of a cube of side 1 cm is equal to …m ^{3}.**

**(b) The surface area of a solid cylinder of radius 2.0 cm and height 10.0 cm is equal to ….(mm)**

^{2}.**(c) A vehicle with a speed of 18 km h**

^{-1}covers…m in 1 s.**(d) The relative density of lead is 11.3. its density is… g cm**

^{-3}or….kg m^{-3}.Solution:

(a) Given that

Length of side, a= 1cm

a=10

^{-2}m.

Volume of cube, V=a

^{3}= (10

^{-2}) m

^{3}=10

^{-6}m

^{3}

(b) According to the question it is given that

Radius of solid cylinder, r=2.0 cm

r= 20 mm [1 cm = 10 mm]

And height of cylinder = h= 10 cm

Reviewer

ShikshaHouse

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Reviewed Item

Class 11th Physics - 2 Units and Measurement - NCERT Solutions

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