VISIBILITY & FOG

#2. RVR is reported when visibility falls below

• A500 m
• B1000 m
• C1500 m
• D2000 m

#7. Warm and moist air moving over a cold surface causes

• ARadiation Fog
• BAdvection Fog
• CFrontal Fog

#8. The radiation fog forms due to

• AHeating of the earth during day
• BRadiational cooling of earth at night
• CAdvection of cold air