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CHETANA PUBLICATION-LENSES-Exercise
- Complete the analogy : Near point : 25 cm:: Far point.
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- True/False: A lens is an opaque object.
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- True/False : Myopia can be corrected by using a spectacle of concave l...
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- True/False : Hypermetropia can be corrected by using a spectacle of co...
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- True/False : Cornea gives colour to the eye.
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- True/False : The light is first and maximum refracted as it passes thr...
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- True/False : The perception of colurs is concerned with cone cells.
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- True/False : Auditory nerve take the impulse from eye to brain
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- True/ False: Impression of an image lasts on the retina for frac(1)(10...
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- Concave lens:Negative focal length:: Convex lens:.
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- True / False: In the compound microscope, two concave lenses are used
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- If the object is at infinity from a convex lens, what would be its siz...
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- Write the lens formula.
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- Name the types of telescopes.
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- How is hypermetropia corrected?
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- How is myopia corrected?
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- By which lens the matchstick can catch fire in the sunlight?
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- What is persistance of vision?
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- What is principal focus?
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- Concave lens:Negative focal length:: Convex lens:.
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