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Question
In which of the following instruments is the final image virtual?
In which of the following instruments is the final image virtual?
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Solution
The correct options are
B Telescope
C Microscope
The final image of the camera and projector is real because it is obtained or projected on a screen or a photographic film or a chip.
A simple microscope uses convex lens and the object is placed between the focus and the optical center, so that, an erect, virtual and enlarged image of the object is formed.
A telescope uses two co-axially placed convex lenses in such a way that the focus of objective lens is past the focus of the eye piece. The first lens or the objective lens produces a real and inverted image of the object to be observed and this real image formed acts as an object for the eye piece convex lens and is between the focus and the optical center, so that, an inverted, virtual and enlarged image of the object is formed.
Hence, the correct answers are OPTIONS C and D.
B Telescope
C Microscope
The final image of the camera and projector is real because it is obtained or projected on a screen or a photographic film or a chip.
A simple microscope uses convex lens and the object is placed between the focus and the optical center, so that, an erect, virtual and enlarged image of the object is formed.
A telescope uses two co-axially placed convex lenses in such a way that the focus of objective lens is past the focus of the eye piece. The first lens or the objective lens produces a real and inverted image of the object to be observed and this real image formed acts as an object for the eye piece convex lens and is between the focus and the optical center, so that, an inverted, virtual and enlarged image of the object is formed.
Hence, the correct answers are OPTIONS C and D.
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