Arrange the following steps about the working of a periscope in sequential order. (A) The reflected light from the first mirror incidents on the second mirror with and angle of 45^(@) to the normal and rotates by 90^(@) (B) A reflecting periscope consistsof a tube bentwice at right angles. Two plane mirrors are provided at the bends with an angle of 45^(@) with the frame of the tube. (C) The reflected light from the second mirror comes out of the tube and enters the eye and causes the sensation of veision. (D) The light rays from the object enter the periscope from the upper tube and are incident on the first mirror with an angle of incident as 45^(@).

Arrange the following steps about the working of a periscope in sequen

1.	Arrange the following steps about the working of a periscope in sequential order. (A) The reflected light from the first mirror incidents on the second mirror with and angle of 45^(@) to the normal and rotates by 90^(@) (B) A reflecting periscope consistsof a tube bentwice at right angles. Two plane mirrors are provided at the bends with an angle of 45^(@) with the frame of the tube. (C) The reflected light from the second mirror comes out of the tube and enters the eye and causes the sensation of veision. (D) The light rays from the object enter the periscope from the upper tube and are incident on the first mirror with an angle of incident as 45^(@).
Answer» BDAC BCAD BADC ABCD Solution :A REFLECTING periscope consists of a tube bent TWICE at right angles. Two plane mirrors are provided at the bends with an angle of `45^(@)` with the frame of the tube. If the light rays coming from the object ENTERS te periscope from the upper tube and are incidnet on the first mirror with an angle of incidence `45^(@)`. The reflected light from the first mirror with an angle of incidence `45^(@)` with the normal, then the reflected light rotates by `90^(@)`. The reflected light from the second mirror comes out of the tube and enters the eye and causes the sensation of VISION.