Following are the set of 25 multiple choice questions from the subject Physics. The purpose of this section is just to support the candidates who prepare for Kerala PSC and other competitive exams. You can always refer this website from your mobile phone on the go or from your home PC.
Physics related Multiple Choice Questions
Topic : Light and Colour 
(A multiple choice questions and answer for Kerala PSC, UPSC, SSC, Banking, IBPS, Railway and other competitive exams)
1. The phenomenon of splitting of light into its constituents:
(a) Diffraction
(b) Interference
(c) Refraction
(d) Disperson

2. Which light has the longest wavelength?
(a) Violet
(b) Green
(c) Blue
(d) Red

3. Which light has the shortest wavelength?
(a) Blue
(b) Violet
(c) Red
(d) Yellow

4. The surface that absorbs all the colours in the spectrum will be seen as:
(a) White
(b) Black
(c) Violet
(d) Red

5. The surface that reflects all the colours in the spectrum will be seen as:
(a) Red
(b) Yellow
(c) White
(d) Black

6. What is the colour of light used in automobiles during snow fall?
(a) Red
(b) Green
(c) Blue
(d) Yellow

7. A red flower in blue light will be seen as:
(a) Black
(b) Red
(c) Blue
(d) Violet

8. The speed of light is ...... km/s
(a) 3 million
(b) 3 lakh
(c) 3 crore
(d) 30 million

9. In the equation, E=MC2, ‘C’ stands for:
(a) Velocity of sound
(b) Acceleration due to gravity
(c) Velocity of light
(d) Refractive index

10. Particles faster than light:
(a) Tachyons
(b) Photons
(c) Neutrons
(d) Protons

11. Speed of light is ...... maximum in:
(a) Vacuum
(b) Water
(c) Steel
(d) Glass

12. Colour of soap bubble is due to:
(a) Disperson
(b) Interference
(c) Diffraction
(d) Refraction

13. Change of path of light when it enters from one medium to another:
(a) Interference
(b) Disperson
(c) Refraction
(d) Diffraction

14. Mirage is due to:
(a) Refraction
(b) Diffraction
(c) Disperson
(d) None of these

15. Study of light:
(a) Accoustics
(b) Optics
(c) Horology
(d) Orology

16. Which one of the following phenomenon explaining the phenomenon of rainbow?
(a) Diffraction
(b) Disperson
(c) Reflection
(d) Refraction

17. Red+Green gives ...... colour:
(a) Yellow
(b) Cyan
(c) Magenta
(d) Violet

18. Blue+Green gives ..... colour.
(a) Pink
(b) Maganta
(c) Cyan
(d) Yellow

19. Red+Blue gives ....... colour.
(a) Cyan
(b) Yellow
(c) Magenta
(d) Black

20. The colour of Nitrogen vapour lamp:
(a) Red
(b) Blue
(c) Green
(d) Yellow

21. The colour of Sodium vapour lamp:
(a) Green
(b) Yellow
(c) Red
(d) Blue

22. ..... is the colour of Neon vapour lamp:
(a) Red
(b) Blue
(c) Orange
(d) Green

23. ...... vapour lamp has green colour:
(a) Nitrogen
(b) Sodium
(c) Neon
(d) Chlorine

24. The colour of Hydrogen vapour lamp:
(a) White
(b) Blue
(c) Yellow
(d) Green

25. The colour of Mercury vapour lamp:
(a) Blue
(b) Orange
(c) Red
(d) White