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A convex lens has focal length 20 cm. Wh...

A convex lens has focal length 20 cm. What is the power of the lens?

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To find the power of a convex lens with a focal length of 20 cm, we can follow these steps: ### Step-by-Step Solution: 1. **Identify the Focal Length**: The focal length (f) of the lens is given as 20 cm. 2. **Convert Focal Length to Meters**: ...
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CENGAGE PHYSICS-REFRACTION OF LIGHT -MANDATORY EXERCISE (EXERCISE SET V)
  1. Find the velocity of light in water, if its velocity in glass of refra...

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  2. The refractive index of water and diamond are 1.33 and 2.42, respectiv...

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  3. What is the real depth of a swimming pool that appears to be 10 m for ...

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  4. The refractive index of a glass prism is 1.65. If the angle of the pri...

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  5. A small object is placed on the axis of a convex lens of focal length ...

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  6. A vessel is filled with two different liquids which do not mix. One li...

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  7. Light travelling in air falls at a boundary between air and water at a...

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  8. Refractive index of glass with respect to water is 1.125. What is the ...

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  9. For a fish under water, what will be the height of a person whose actu...

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  10. Speed of light in a liquid is 1.8 xx 10^(8) m/s. What is the critical ...

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  11. Which pair of medium has higher critical angle. Air-water or air-glass...

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  12. In an experiment to find refractive index of a prism it was found that...

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  13. A convex lens has focal length 20 cm. What is the power of the lens?

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  14. Power of a lens is -2.5 D. What is the focal length and nature of the ...

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  15. The lateral shift for a ray of light incident at 60^(@) on one face o...

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  16. Where should an object be kept if a real image is obtained at a distan...

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  17. Where should an object be kept before a convex lens such that the imag...

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