Q61. The materials with almost zero resistance are simply called as_______.

Q62. _______ is the physical quantity which is equivalent to rate of change in momentum of an object.

Q63. Heat transfer in liquid and gases takes place by____________.

Q64. Electric field lines starts from _____charge, and ends to _____charge.

Q65. The number of electrical field lines passing perpendicular to the unit cross section area is called_______.

Q66. Temperature of boiling water is___________\(^\circ C\)

Q67. SI unit of heat capacity is___________.

Q68. The inertia of a body depends on____________ of body.

Q69. Temperature of boiling water is___________\(^\circ F\)

Q70. Which law does give magnitude of force between two static electric charges?