44. Fog is reported when visibility is reduced to
a. Less than 1000 m
b. 1000m
c. 1000 to 2000
45. RVR is reported when visibility falls below
a. 500 m
b. 1000 m
c. 1500 m
d. 2000 m
46. Radiation fog occurs
a. Over land
b. Over sea
c. During day
47. When visibility reduces between 5000 m and 1000 m and RH is almost 100%, it is
