Which of the following coloured light has the least speed in glass prism ?
(a) violet (b) yellow (c) red (d) green

Q. Which of the following coloured light has the least speed in glass prism?
(a) violet
(b) yellow
(c) red
(d) green

Q. Which of the following colour of white light is least deviated by the prism?
(a) green
(b) violet
(c) indigo
(d) yellow

Q. Is the speed of light in glass independent of the colour of light? If not, which of the two colours (red and violet) travels slower in a glass prism?

Q. Which of the following colour of white light has the least wavelength ?
(a) red (b) orange (c) violet (d) blue

Q. Photosynthesis is more active in
(a) green light
(b) red light
(c) yellow light
(d) violet light