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Periscope & Pin-Hole Camera
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Game Code: 102662
English
14
Public
Understanding the working of a Periscope & a Pin-Hole Camera
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sowmya ananth
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What is a Periscope?
A periscope is a tube which people inside submarines can look through to see above the surface of the water.
15
What is the basic principle of a periscope based on?
Reflection of Light
15
How does a Periscope work?
A periscope works by using two mirrors to reflect light from one mirror to another for the person to see the things above the ground/sea
15
How many mirrors does a periscope have? a) 4, b) 2, c) 3
2
15
What is a virtual image?
an image seen in a lens or mirror that cannot be projected on a screen.
15
What is a real image?
An upside-down image formed where rays of light meet on a screen.
15
What is the angle of mirrors in periscope?
45 degrees
15
What is Dispersion?
It is the splitting of light into 7 colours
15
What kind of an Image does a Pin-Hole Camera make?
It makes a smaller image than the object, and also inverted (upside down)
15
What kind of image does a bigger hole make in a Pin-Hole Camera?
Brighter and Blur
15
What kind of image do many holes make in a Pin-Hole Camera?
Many inverted images
15
What is a Plane Mirror?
flat mirror; reflecting surface that has no curvature
15
Type of mirror used in a Periscope? a) Curved Mirror, b) Plane mirror
Plane Mirror
15
Image of a pinhole camera is ............. a) Real, b) Virtual
Real
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