____________ reflection is the working principle of the Kaledioscope.
Single
Multiple
Dynamic
Static
Time required by light to travel from moon to earth
4 second
1.3 Second
8 Second
1.3 Hour
_________ object absorbs all colours
White
Black
Red
Orange
The colour of an object that reflects all the colours is __________
Green
Yellow
Blueness of sky is due to __________ of light
Absorption
Scattering
Reflection
Retraction
There are _________ colours in a rainbow
4
5
6
7
What is the velocity of light
4 x 108 m/s
4 x 1010 cm/Sec.
3 x 108 m/s
5 x 108 m/s
Choose the order of colours in a rainbow.
VIBYGOUR
VIBGYOR
VBIYGRO
RVIBGYO
The incident ray, one reflected ray and normal lie on __________.
Same plane
Different plane
Parallel plane
None of these
Which colour of Sunlight is not required in photosynthesis
Blue
