Explain the working principle of ohp
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OHP (Overhead projector) is a tool for projecting translucent objects. How
the OHP works like desktop.
- The light coming from the projection lamp is placed in front of a concave
mirror at its focal point.
- Rays reflected parallel to the main axis further passed to the "lens system"
and fall on a flat mirror.
- Rays reflected from a flat mirror of translucent objects to a flat mirror as a
dented.
- This ray is further enlarged by the objective lens and its shadow falls on the
screen.
the OHP works like desktop.
- The light coming from the projection lamp is placed in front of a concave
mirror at its focal point.
- Rays reflected parallel to the main axis further passed to the "lens system"
and fall on a flat mirror.
- Rays reflected from a flat mirror of translucent objects to a flat mirror as a
dented.
- This ray is further enlarged by the objective lens and its shadow falls on the
screen.
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