NAT I Engineering Physics MCQs With Answers

The mass defect for the nucleus of helium is 0.0303 a.m.u What is the binding energy per nucleon for helium in MeV?

Ultra-violet radiation of 6.2 eV falls on an aluminium surface K.E of fastest electrons emitted is(work function = 4.2 eV)

With the propagation of a longitudinal wave through a material medium the quantities transmitted in the propagation direction are

The direction of induced current is such that it opposes the very cause that has produced it This is the law of

One cannot see through fog because

When a Na ion and a CI ion are placed in air a force F acts between them when they are separated by a distance of 1 cm from each other the permittivity of air and the dielectric constant of water are ε₀ and K respectively When a piece of salt is placed in water then the force between Na⁺ and CI^- ions separated by a distance of 1 cm will be

At 0° K which of the following properties of a gas will be zero?

When boron is added as an impurity to silicon the resulting material is

Which of the modulus of elasticity is involved in compressing a rod to decrease its length?

In an ac circuit with voltage V and current 1 the power dissipated is

The volt/metre is the unit of: