Physics Past Questions and Answers

Young’s modulus of elasticity is the ratio of stress to strain, provided the load does not exceed the ___________

Which of the following instruments can be used to measure e.m.f. most accurately.

Evaporation of a liquid produces cooling of the liquid because the ___________

Calculate the amount of heat generated in an external load of resistance 8Ω if an alternating current of peak value 5 A is passed through it for 100s.

A machine has an efficiency of 80%. If the machine is required to overcome a load of 60N with a force of 40N, calculate its velocity ratio.