Physics Past Questions and Answers

Which of the following is used as a depolarizer in a Denial cell?

A radioactive isotope has a half-life of 8 days. What fraction of the atoms will remain after 72 days?

If the distance between the plates of a parallel plate capacitor is decreased, its capacitance ____________

The resultant of two forces P and Q is least when the angle between them is ____________

A ray of light experiences a minimum deviation when passing through an equilateral triangular glass prism. Calculate the angle of incidence of the ray. [Refractive index of glass = 1.5]