Figure shows a torch producting a straight light beam falling on a plane mirror at an angle `60^(@)` The reflected beam makes a spot P on the screen along y-axis . If at t=0, mirror starts ratating about the hinge A with an angular velocity `(omega)=1^(@)` per second clockwise. Find the speed of the spot on screen after time t = 15 s.

Figure shows a torch producing a straight light beam falling on a plane mirror at an angle 60^(@) . The refected beam makes a spot P on the screen along y-axis. If at t=0 the mirror starts rotating about the hinge A with an angular velocity omega=1^(@) per second clockwise, find the speed of the spot on screen after time t=15s

Figure shows a plane mirror hinged at O and free to rotate in a vertical plane. The point O is at a distance x from a long screen. A beam of light moving vertically downwards is reflected by the mirror at O so that a bright spot P is formed at the screen. At the instant shown, the angle of incidence is theta and the mirror is rotating clockwise with constant angular veloity omega . Find the speed of spot P at this instant.

Figure shows a plane mirror hinged at O and free to rotate in a vertical plane. The point O is at a distance x from a long screen. A beam of light moving vertically downwards is reflected by the mirror at O so that a bright spot P is formed at the screen. At the instant shown, the angle of incidence is theta and the mirror is rotating clockwise with constant angular veloity omega . Find the speed of spot P at this instant.

A small plane mirror placed at the centre of a spherical screen of radius R. A beam of light is falling on the mirror, If the mirror makes n revolution per second, the speed of light on the screen after reflection from the mirror will be

Figure shows a solid transport semi cylinder of radius 10 cm . A screen is placed at a distance 60 cm from O . A narrow beam is incident along X- axis at O . If cylinder starts rotating about O in clockwise direction with angular speed 6 rad//s spot formed on screen will move upward (Refractive index of material of cylinder =(5)/(3) ) What is initial angular velcity of ray refrected from plane surface.