Write 'True' or 'False' :i) A knife is an example of simple machine ca

Write 'True' or 'False' :i) A knife is an example of simple machine called wedge.ii) A sugar tong is a lever of second order.iii) 1 kgf = 10 N iv) Spring balance is used to find the weight of a body. v) Burning of meteor in the atmosphere is due to force of friction. vi) Force of friction always acts in a direction same as the direction of applied force. vii) A quintal is a multiple of kilogram. viii) A physical balance is used to find mass of costly substances such as gold, diamonds etc.ix) Mass is the amount of matter contained in an object x) Appropriate unit to measure the length of a football ground is kilometre.

Answer»

ii. False

iii. True

iv. True

v. False

vi. False

vii. True

viii. True

ix. True

x. True