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Q1. The heat gained or lost by a body during a change of state is ........ heat.
Q2. The heat absorbed by the coolant is transferred to the water in the .............
Q3. The fusion reaction occurs at
Q4. The gravitational force acting on an object is called its
Q5. The function of the live wire is to
Q6. The function ‘of the carbon brushes in a DC motor is to .............
Q7. The frequency of tuning fork that vibrates 3750 times in 5 s is.
Q8. The frequency of a wave is 330 Hz and the velocity of sound in air is 330 m/s, then what is the wavelength of the wave?
Q9. The frequency of AC mains used in India is
Q10. The free surface of liquid behave like
Q11. The free surface of a liquid possesses
Q12. The force with which the earth attracts an object is
Q13. The force which acts over short distances is .............
Q14. The force on a charged particle moving in a magnetic field is maximum. What is the angle between the direction of motion and field?
Q15. The force of surface tension is always to the liquid surface.
Q16. The force of surface tension is always to the liquid surface
Q17. The force of attraction between the molecules of the same substance is
Q18. The force developed within the body due to molecular displacement is called
Q19. The force acting on an object perpendicular to the surface is called
Q20. The following particles are moving with a same velocity. Which one has a maximum Debroglie wavelength?
Q21. The focal length of eye lens is more when eye lens become
Q22. The focal length of concave lens is always
Q23. The focal length of convex lens is always
Q24. The focal length of a lens is - 30 cm the given lens is ...............
Q25. The fixed resistor is called
Q26. The first Indian astronomer who described the rotation of the earth on its own axis is
Q27. The far point of an eye suffering from ............. is less than infinity.
Q28. The farthest position of the planet from the sun is
Q29. The extremely minute particles present in the atmosphere mainly scatter which colour of light?
Q30. The energy of water is called
Q31. The energy possessed by a body due to its position or configuration is
Q32. The energy of a photon of light is 3 ev. Then what is the wave length of the photon?
Q33. The emf obtained from an AC generator can be increased by .............
Q34. The emf induced in a coil of 500 turns. If the flux linked with the coil changes from 0.5 wb to 1.5 wb in 0.05 s is
Q35. The EM waves propagate in a direction
Q36. The electromagnets are used in
Q37. The electromagnetic induction is a phenomenon in which ......... is developed from change of
Q38. The electrochemical cells which make use of irreversible chemical reactions are
Q39. The electrical resistance of a conductor depends on
Q40. The distinct properties of liquids are due to
Q41. The electric current is due to drift of free electrons in
Q42. The distance travelled by light in one year is called
Q43. The distance travelled by a wave in one second is its
Q44. The distance moved in completing one oscillation is
Q45. The distance between two crests of a wave is 50cm what is the wavelength of the wave?
Q46. The distance between two consecutive crests of a wave is called
Q47. The direction of the magnetic field at the centre of a circular coil carrying current can be found by .............
Q48. The direction of the flow of heat depends upon
Q49. The direction of magnetic lines produced by passing a direct current in a conductor is
Q50. The difference in air pressure between inside and outside of a soap bubble of 4 mm in diameter if surface tension of soap solution is 7 × 10–2 Nm–1 is
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