The polaroids `P_(1), P_(2) & P_(3)` are arranged coaxially. The angle between `P_(1)` and `P_(2)` is `37^(@)`. The angle between `P_(2)` and `P_(3)` is, if intensity of emerging light is a quarter of intensity of unploarized light

Three polaroid sheets P_(1), P_(2) and P_(3) are kept parallel to each other such that the angle between pass axes of P_(1) and P_(2) is 45^(@) and between P_(2) and P_(3) is 45^(@) . If unpolarised beam of light of intensity 128 Wm^(-2) is incident on P_(1) . What is the intensity of light coming out of P_(3) ?

Unpolarized light is intensity I_(0) passes through two polaroids P_(1) and P_(2) such that pass axis of P_(2) makes an angle theta with the pass axis of P_(1) . A third polaroid P_(3) is placed between P_(1) and P_(2) with pass axis of P_(3) making an angle beta with that of P_(1) . If I_(1), I_(2), I_(3) represent intensities of light trnasmitted by P_(1), P_(2), P_(3) , determine the values of angle theta and beta for which I_(1) = I_(2) = I_(3) .

Three identical conducting plates P_(1),P_(2) and P_(3) are kept at a distance d from each other. If q,-q,2q are the charges in P_(1),P_(2) and P_(3) respectively, the electric field between P_(1) and P_(2) is (where A is area of plate)

A plane P_(1) has the equation 4x-2y+2z=3 and P_(2) has the equation -x+ky-2z=7 . If the angle between P_(1) and P_(2) is (2pi)/(3) , then the value of k can be

A plane P_(1) has the equation 4x-2y+2z=3 and P_(2) has the equation -x+ky-2z=7 . If the angle between P_(1) and P_(2) is (2pi)/(3) , then the value of k can be

Unpolarised light beam of intensity I_(0) is incident on polaroid P_(1) . The three polaroids are arranged in such a way that transmission axis of P_(1) and P_(3) are perpendicular to each other. Angle between the trasmission axis of P_(2) and P_(3) 60^(@) . The intensity of the beam coming out from P_(3) will be:

Unpolarised light beam of intensity I_(0) is incident on polaroid P_(1) . The three polaroids are arranged in such a way that transmission axis of P_(1) and P_(3) are perpendicular to each other. Angle between the trasmission axis of P_(2) and P_(3) 60^(@) . The intensity of the beam coming out from P_(3) will be: