A beam of plane polarised falls normally on a polariser (cross section area `3xx10^(-4),^(2))` Find the energy of light pssing through the polariser per revolution and the intensisty of the emergent beam if the flux of energy of the incident ray is `10^(-3)W`.

A beam of plane polarised light falls normally on a polariser (cross sectional area 3 xx 10^(-4)m^(2) ) which rotates about the axis of the ray with an angular velocity of 31.4 rad//s . Find the energy of light passing through polariser per revolution and the intensity of emergent beam, if flux of energy of the incident ray is 10^(-3) W .

A beam of plane-polarized light falls on a polarizer which rotates about the axis of the ray with angular velocity omega = 21rad//s . Find the energy of light passing through the Polarizer per one revolution if the flux of energy of the incident ray is equal to Phi_(0) = 4.0mW .

A beam of plane polarized light falls normally on a polarizer of cross sectional area 3xx10^-4m^2 . Flux of energy of incident ray in 10^-3W . The polarizer rotates with an angular frequency of 31.4 rad//sec . The energy of light passing through the polarizer per revolution will be

A beam of plane polarized light having flux 10^(-3) Watt falls normally on polarizer of cross sectional area 3x10^(-4) m^2. Polarizer rotates with angular frequency of 31.4 rad/s. Energy of light passes through the polarizer per resolution will be

A beam of unpolarised light having flux 10^(-2) watt falls normally on a polariser of cross sectional area 3 xx 10^(-4) m^(2) . The polariser rotates with an angular frequency of pi rad/s. The energy of liggt passing through the polariser per revolution will be

A beam of plane polarised light of large cross - sectional area and uniform intensity of 3.3Wm^(-2) falls normally on a polarises (cross sectional are 3xx10^(-4)m^2 ) which rotates about its axis with an angular speed of 31.4 rad/s . The energy of light passing through the polariser per revolution , is close to :

A mixture of plane polarised and unpolarised light falls normally on a polarising sheet. On rotating the polarising sheet about the direction of the incident beam, the transmitted intensity varies by a factor 4. Find the ratio of the intensities I_(P) and I_(0) respectively of the polarized and unpolarised components in the incident beam. Next the axis of polarising sheet is fixed at an angle of 45^(@) with the direction when the transmitted intensity is maximum. Then obtain the total intensity of the transmitted beam in terms of I_(0) . [(3)/(2),(5I_(0))/(4)]

A mixture of plane polarised and unpolarised light falls normally on a polarising sheet. On rotating the polarising sheet about ther direction of the incident beam, the transmitted intensity varies by a factor of 3. The ratio of intensities I_p and I_p of the polarised and unpolarised components in the incident beam is

An upolarised beam of intensity 2a^(2) passes through a thin polarioid. Assuming zero absorption in the polariod, the intensity of emergent plane polarised light is

A laser beam of pluse power 10^(12) watt is focussed on an object are 10^(-4) cm^(2) . The energy flux in watt//cm^(2) at the point of focus is