46.  Mechanical energy is countered into electrical energy

47.  The process by which sunlight reaches to earth--..

48.  In a Filament type Light bulb most of the electric power consumed appear as

49.  Noise is measure in?

50.  The Permissible noise level at Residential area during time is

51.  The range of frequency of ultrasonic wave.

52.  The use of Decibel unit is ----

53.  What is Decibel?

54.  Wavelength of visible spectrum is -

55.  X-rays are ----------.. waves.

56.  Which scale is used to measure the intensity of earthquake?

57.  The Unit of noise pollution (level) is

58.  Supersonic air plane creates a shock wave called

59.  Cryogenic Science is related to -

60.  The Hottest part of Gas Flame is known as - [