In figure, the optical fiber is `I=2m` long and has a diameter of `d=20 mum`. If a ray of light is incidnet on one end of the fiber at angle `0_(1)=40^(@)C`, the number of reflections if makes before emerging from the other and is close to: (refractive index of fiber is `1.31` and `sin40^(@)=0.64`)
In figure, the optical fiber is l = 2 m long and has a diameter of d = 20 mum. If a ray of light is incident on one end of the fiber at angle theta_1=40^@ , the number of reflections it makes before emerging form the other end is close to : (refractive index of fiber is 1.31 and sin40^@=0.64 )
Two parallel plane mirrors M_(1) and M_(2) have a length of 2 m each and are 10 mm apart. A ray of light is incident on one end of mirror M_(2) at an angle of 30^(@) . The number of reflections light undergoes before reaching the other end is –
Two plane mirrors M_(1) and M_(2) each have length 1 m and are separated by 1 cm . A ray of light is incident on one end of mirror M_(1) at angle 45^(@) . How many reflections the ray will have before going from the other end?
Two plane mirrors each 1.6 m long, are facing each other. The distance between the mirrors is 20 cm. A light incident on one end of one of the mirrors at an angle of incidence of 30^(@) . How many times is the ray reflected before it reaches the other end?
An optical fiber has index of refraction n=1.40 and diameter d=100 mu m . It is surrounded by air. Light is sent into the fiber along the axis as shown in figure. If smallest outside radius R permitted for a bend in the fiber for no light to escape is given by 50 x ("in" mu m) fill value of x.
An optical fiber has index of refraction n=1.40 and diameter d=100 mu m . It is surrounded by air. Light is sent into the fiber along the axis as shown in figure. If smallest outside raidus R permitted for a bend in the fiber for no light to escape is given by 50 x (in mu m) fill value of x.
