Geometrical OpticsEasy
Question
What will be the colour of sky as seen from the earth, if there were no atmosphere :-
Options
A.Black
B.Blue
C.Orange
D.Red
More Geometrical Optics Questions
Two plane mirror are placed parallel to each other at a distance L apart. A point object between them at a distance L/3 ...The illuminance of a surface distant 10m from a light source is 10 lux. The luminous intensity of the source for normal ...In a compound microscope, the intermediate image is...A ray of light travels from an optical denser medium to rater medium. The critical angle for the two media is C. The max...The illumination from the sun is greater at noon than in morning because :...