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Q1. How many times the nuclear radius is smaller than atomic radius?
Q2. How many units of positive charge does a - rays have?
Q3. How many reactors are in operation in India’s nuclear power programme?
Q4. How many times the light ray refracts as it propagates through a triangular glass?
Q5. How many power reactors are in operation in India?
Q6. How many radioactive isotopes are produced?
Q7. How many images will be got when two plane mirrors are placed perpendicular?
Q8. How many images are formed when two plane mirrors are inclined at 50 degree to each other?
Q9. How many 100 w bulbs may be safely used on 220 V with five amperes fuse?
Q10. How many electrons present in 92U238?
Q11. How is the refractive index computed? [a - air, w - water, m - medium, c - velocity]
Q12. How is the light from the sun reaches us before sunrise?
Q13. How fast a man of mass 100 kg to run so that his K.E is 800 J.
Q14. How far will a brick starting from rest fall freely in 3 sec?
Q15. How far will a brick starting from rest fall freely in 3 sec? [h = 1/2 at2]
Q16. How does the sun’s heat reach the earth?
Q17. How does water rises up to the top of the tree?
Q18. How does heat pass through a single pane of window glass?
Q19. How does an object catches fire when it enters earth’s atmosphere with high velocity?
Q20. How does a well cut diamond appear bright?
Q21. How can the strength of the electromagnet be increased?
Q22. How can be voltage generated?
Q23. How biogas is produced?
Q24. How are the atoms arranged in amorphous solids ?
Q25. How are radio isotopes obtained?
Q26. How are microwaves generated?
Q27. How are EM waves produced?
Q28. Green house gases are capable of
Q29. Green house gases allow less amount of ........... to pass through
Q30. Gravitational force is a ..............
Q31. Glass does not allow which rays to pass through
Q32. Gobar gas plant is based on
Q33. Geothermal energy is feasible in regions that
Q34. Geoger and Marsdon performed an experiment on the scattering of a-particle from a ..............
Q35. Gamma rays can be stopped only by lead of thickness .................
Q36. Gamma rays are ....... charged particles.
Q37. Galvanometer is used for detecting the
Q38. Fusion point and occur at the same temperature.
Q39. Fossil fuel are formed in ......... years.
Q40. For which spherical mirror polish is done on the inner surface?
Q41. Formula question
Q42. For which mirror, the focal length is –30cm.
Q43. For which mirror the image is virtual. erect and small size, whatever the position of the object?
Q44. For which colour refractive index of glass is maximum?
Q45. For which colour the critical angle is minimum when light passes from glass to water?
Q46. For which atoms Bohr’s postulates are applicable?
Q47. For the nuclear reaction to be a controlled chain reaction, the value of reproduction factor is .............
Q48. For radar communication ......... waves are used.
Q49. For equilibrium, a system must possess .............. Potential energy.
Q50. For an uncontrolled chain reaction, the reproduction factors is ..............
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