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Light-Part 2-Grade5
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Which surface ,mirror or wood reflect light better?How do we know?
A mirror, as it's shiny and we can see our reflection on it.
Which of the following reflect light the most? a) Mirror b)A piece of paper c)a cloth d)a green leaf
A Mirror
Metals are shiny because...............
They reflect a lot of light
You cannot see a burning candle using a bent pipe?Why
Light travels in a straight line.
A collection of rays are called.......................
Beam of Light
Translucent bodies do not cast shadows? True or False
False
Define Reflected ray?
The ray that reflects or bounces off the mirror.
Define Incident Ray?
The ray that comes from an object and strikes the mirror.
3 things required to form a shadow?
Source of Light opaque object Screen
When a water droplet breaks light into the 7 colours what do we see?
A rainbow
what is the phenomena of breaking of light into 7 colours called?
Dispersion
What is the band of seven colours of light called?
Spectrum
Light rays are reflected from a smooth surface.What is this type of reflection called?
Regular Reflection.
Light rays are reflected from rough surface.What is this type of reflection called?
Irregular reflection
How do we see an object?
When the reflected ray from that object reaches our eyes, we see
Can light travel in vacuum?
yes,Light can travel through Vacuum
What is the speed of light?
300000km/sec
Does light always travel in straight line?
Yes,light always travels in straight line till it is blocked by an object.
Is Light a Wave?
Yes, It is an electromagnetic wave
What is white light?
It is the combination of 7 colours in the spectrum
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