Physics – GK Quiz

Physics – GK Quiz

1. One nanometer is equal to
 
 
 
 

2. Rainbow is produced when sunlight fall on drops of rain. Which of the following physical phenomena are responsible for this?
Diffusion
Refraction
Internal reflection
 
 
 
 

3. Planets are
 
 
 
 

4. Mica is used in electrical appliances such as electric iron because mica is
 
 
 
 

5. Rain is falling vertically downwards. To a man running east-wards, the rain will appear to be coming from
 
 
 
 

6. Minimum number of unequal vectors which can give zero resultant are
 
 
 
 

7. Intensity of sound has
 
 
 
 

8. Natural radioactivity was discovered by
 
 
 
 

9. An aeroplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically at a point A on the ground a bomb is released from it. The bomb strikes the ground at point B. The distance AB is
 
 
 
 

10. It is easier to roll a barrel full of coal tar than to pull it because
 
 
 
 

11. ML2T-2 is the dimensional formula for
 
 
 
 

12. Isotopes of an element contain
 
 
 
 

13. Sir C.V. Raman was awarded Nobel Prize for his work connected with which of the following phenomenon of radiation?
 
 
 
 

14. One watt-hour is equivalent to
 
 
 
 

15. In which of the following industries is mica as a raw material?
 
 
 
 

16. Large astronomical telescopes always use as objective
 
 
 
 

17. Radiocarbon dating technique is used to estimate the age of
 
 
 
 

18. One should not connect a number of electrical appliances to the same power socket because
 
 
 
 

19. Identify the vector quantity from the following
 
 
 
 

20. Solar eclipse will take place when
 
 
 
 

21. Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit
 
 
 
 

22. Mercury is commonly used as a thermometric fluid rather than water because
 
 
 
 

23. Stars which appear single to the naked eye but are double when seen through a telescope are
 
 
 
 

24. Optical fibre works on the
 
 
 
 

25. Out of the following pairs, which one does not have identical dimension?
 
 
 
 

26. Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in
 
 
 
 

27. Mach number is used in connection with the speed of
 
 
 
 

28. On a stationary sailboat, air is blown from a fan attached to the boat. The boat
 
 
 
 

29. Supersonic plane fly with the speed
 
 
 
 

30. Rainbow is due to
 
 
 
 

31. Sound travels at the fastest speed in
 
 
 
 

32. Superconductors are substances which
 
 
 
 

33. oil raise up the wick in a lamp. The principle involves
 
 
 
 

34. Light travels at the fastest speed in
 
 
 
 

35. The intensity of sound at a point is ____ its distance from the source.
 
 
 
 

36. On a cold day when a room temperature is 15oC, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15oC, because
 
 
 
 

37. Radio telescopes are better than optical telescopes because
 
 
 
 

38. Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons?
 
 
 
 

39. Of the four locations mentioned below the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open
 
 
 
 

40. Railway tracks are banked on curves
 
 
 
 


 

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