In a common base amplifier, the phase difference between the input signal voltage and output voltage is

• π/4 

• π

• 0

• 0

72.

In a full wave rectifier circuit operating from 50 Hz mains frequency, the fundamental frequency in the ripple would be

• 50 Hz

• 25 Hz

• 100 Hz

• 100 Hz

A nuclear transformation is denoted by X(n, α) . Which of the following is the nucleus of element X?

When an unpolarized light of intensity I₀ is incident on a polarizing sheet, the intensity of the light which does not get transmitted is

• I₀ /2

• I₀ /4

• zero

• zero

If I₀ is the intensity of the principal maximum in the single slit diffraction pattern, then what will be its intensity when the slit width is doubled?

• 2I₀

• 4I₀

• I₀

• I₀