Physics Test-27...

Bernoulli’s equation is applied to ____________.

Which of the following statement regarding electric field lines is correct?

In an unbiased \(n-p\) junction electrons diffuse from \(n\)-region to \(p\) region because :

A permanent retarding force of \(50 N\) is applied on a body of mass \(20 kg\) moving with an initial speed of \(15 ms^{-1}\). How long will it take for the body to stop?

Total heat is the heat required to _________.

In Young's double slit experiment, the two equally bright slits are coherent, but of phase difference \(\frac{\pi}{3}\). If maximum intensity on the screen is \(I_0\), the intensity at the point on the screen equidistant from the slits is:

Which of the following pairs of physical quantities does not have same dimensional formula?

The first law of motion is also known as the law of:

Find the amount of work done in rotating a dipole of dipole moment \(3 \times 10^{-3} cm\) from its position of stable equilibrium to the position of unstable equilibrium, in a uniform electric field of intensity \(10^{4} NC C ^{-1}\).