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Telescope

Fill in the b...

Question

Fill in the blank spaces by choosing the correct words from the list given below:
List : principal focus, optical centre, pole, optical axis

When the convex lens act as a lens for slide projector, the object is between the principal focus and ..........

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Solution

Optic axis
When the object is placed between the principal focus and optic axis, it forms a virtual, erect and magnified image.

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Q. Fill in the blank spaces by choosing the correct words from the list given below:
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