The speed of light is __________? - PakMcqs

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1. The speed of light with the rise in the temperature of the medium____________?

   A. Decrease B. Increase C. Remain the same D. First decrease then increase Submitted by: WIQAR AHMAD...

2. When white light is passed through a prism, it splits into __________ colours.

   A. 5 B. 6 C. 7 D. 8...

3. The light of distant stars is affected by __________ ?

   A. The earth’s atmosphere B. Interstellar dust C. both A and B D. None of these Submitted by: Rashid Mehmood...

4. A train goes past a railway station at a high speed. A young boy standing on the edge of the platform is likely to __________?

   A. Remain unaffected B. Fall away from the train C. Fall towards the train D. Fall away from or towards the train depending upon the speed...

5. Clocks, which moves with the velocities comparable with the velocity of light, run ?

   A. fast B. slow C. equal to the velocity of light D. with zero velocity...

6. Which one of the following wavelengths of light is most effective in photosynthesis?

   A. Blue B. Green C. Orange D. Yellow Submitted by: Malik Asghar Hussain...

7. The process of splitting water molecules in the presence of light energy is called_________?

   A. Electrolysis B. Photolysis C. Radiolysis D. Thermolysis Submitted by: Malik Asghar Hussain...

8. SI unit of light is _________ ?

   A. watt B. Pascal C. Candela D. Joule Submitted by: Shahbaz Jiskani...

9. Which of the following is mainly used for light patrol engines ?

   A. Kerosene oil B. Paraffin oil C. Heavy Fuel oil D. Gasoline Submitted by: Faheem Zaman Dhaunroo...

10. Recently, scientists observed the merger of giant ‘blackholes’ billions of light-years away from the Earth. What is the significance of this observation?

    A. ‘Higgs boson particles’ were detected. B. Gravitational waves’ were detected. C. Possibility of inter-galactic space travel through ‘wormhole’ was confirmed. D. It enabled the scientists to understand ‘singularity’. Submitted by: Abid Hussain...