Which of the following surfaces reflect most of the visible light?
a) table
b) black cloth
c) white board
d) mirror
What is/are the characteristic/s of highly polished surfaces such as glasses and what happens to them when light fall upon them?
a) most of the light transmitted
b) none of the light is transmitted
c) very little light is absorbed
d) all of these
Speed of Light:
Light from a moving source also travels at 300,000 km/sec (186,000 miles/sec).
Say that Einstein's bike travels at 10% the speed of light (30,000 km/sec): the speed of light from Einstein's headlight does NOT equal 330,000 km/sec.
The speed of light is constant and does not depend on the speed of the light source.
The speed of light is …….
a) very slow
b) very fast
c) moderate
d) not known
Why the flash of lightening is seen before we hear the roar of thunder?
a) light is slower than sound
b) eye is faster than ear
c) light is faster than sound
d) ear is faster than eye
The speed of light in kilometer per second is
a) 2x107
b) 2x108
c) 2x107
d) 3x108
Option a:most of light is reflected
by at 2024-07-23 19:14:12