51. Which of the following two physical quantities have the same unit?
52. Hygrometer is used to measure
53. Which of the following is the physical quantity for the expression arc/radius?
54. Which one of the following is a non-dimensional quantity?
55. From which device is the electric current measured?
56. Nm-2 is SI unit of-
57. 'Pyrheliometer' is used for measuring
58. The dimensional formula of angular velocity is
59. Which instrument is used for measuring power and speed of wind?
60. 'Parsec' is the unit measurement of
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