Question

a.) the speed of light in vacuum ______ .

b.) the _______ is the primary source of flight on earth .

c.) Rectilinear propagation of light means _______ .

d.) In periscope ,two plane mirror are fixed _______ to each other .

e.) straight line propagation of light _______ .

f.) device used to see overhead crowd _______ .

g.) beam of light as received the earth _______ .

h.) image in standing position is called _______ .

Please tell me answer fast ...
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Answer 1

Answer:

1. 3×10^8m/s

Sun

propagation of light in straight way

Answer 2

Answer:

a) approximately 300,000 km per second

Explanation:

Am I right