Visible light travels through the output phosphor at 1.6 × 108 m/s.  What is the refractive index of the material?A.1.9B.1.1C.0.88D.0.53

The expression for refractive index is given bySelect one:a.  N = v/cb.  N = c/vc. N = 1/cvd. N = cv

When light travels from air to an optically denser medium, its speed is decreased by 25%. What is the refractive index of the medium? A 0.75 B 1.00 C 1.16 D 1.33

A ray of light travels with a speed of 2 ×× 10810 8 in a medium `A' and enters into another medium `B' travelling with velocity 2.5 ×× 10810 8 m/s. If absolute refractive index of medium `A' is 1.52. Calculate the refractive index of medium `B' with respect to `A'.(Find answer upto one places of decimal)0.50.20.81

formula for refractive index?

The absolute refractive index of benzene is 1.50 and that of water is 1.33. Determine the refractive index of benzene relative to water. 1.991.131.531.03       If the refractive index of diamond with respective air is 2.5, what will be the refractive index of air with respective diamond?2.50.50.40.8       Ultraviolet light with a wavelength of 300 nm passes from air into a substance with a refractive index of 1.5. What is the wavelength of light inside substance in AoAo ? (Given that 1𝑛𝑚=10Ao1nm=10 Ao )2300Ao2300 Ao 2100Ao2100 Ao 2000Ao2000 Ao None of the above       Light travelling through a certain optical fiber at a speed of 1.95×108𝑚/𝑠1.95×10 8 m/s enters a different fiber where its speed changes to 2.30×108𝑚/𝑠2.30×10 8 m/s. If the refractive index of the first fiber is 1.48, determine the refractive index of the second fiber relative to the first. Correct up to 2 decimal points.1.180.850.120.02       Light travels through a 5 mm thick sheet of transparent plastic with a refractive index of 1.20. Calculate the time taken by the light to pass through the plastic sheet and emerge outside from other side. (Given: Speed of light in vacuum = 3×108𝑚/𝑠3×10 8 m/s)3×10−8𝑠3×10 −8 s2×10−8𝑠2×10 −8 s3×10−11𝑠3×10 −11 s2×10−11𝑠2×10 −11 s       Light from a laser pointer strikes a plane mirror at an angle of  30o 30 o to the normal. If the angle of incidence decreases by  8o 8 o , what is the new angle of reflection?30o30 o  38o 38 o  22o 22 o  45o 45 o        A 3.9 cm tall toy is placed at a distance of 24 cm from a concave mirror. If the image of toy formed is one-third the size of the toy and is inverted, determine the height of the image and focal length of the mirror.-1.3 cm and +6 cm respectively-1.3 cm and -6 cm respectively-1.3 cm and -12 cm respectively-1.3 cm and +12 cm respectively