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An object is placed at the focus of Conv...

An object is placed at the focus of Convex lens. Where will the image be formed?

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An abject is placed at a distance of 30 cm from a lens. The image is formed at a distance of 45 cm on the other side.of the lens. Identify the nature of the lens and also find its focal length.

When an object is placed at a distance 6 cm from a concave lens a virtual image is formed at a distance 4cm from it. Find the focal length of the lens.

An object is placed in front of a convex lens of focal length 30 cm. An image of magnification +2 is formed on the same side of the convex lens. Find the nature and position of the image. Also, draw a ray diagram.

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R G PUBLICATION-RAY OPTICS AND OPTICAL INSTRUCMENTS-EXERCISE
  1. What is the range of wavelength of electromagnetic radiation that natu...

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  2. Why is a photodiode preferable used in the reverse bias condition for ...

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  3. An object is placed at the focus of Convex lens. Where will the image ...

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  4. What is magnifying power of an astronomical telescope? Draw the necess...

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  5. Draw a ray diagram to show the formation of final image by a compound ...

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  6. Draw the ray diagram to show the formation of real and virtual image i...

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  7. Establish the following relation for total deviation delta of a ray li...

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  8. State two important differences between interference and diffraction.

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  9. Two lenses of powers +5D and - 3D are in contact: Find the focal lengt...

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  10. Deduce the relation 1/v-1/u=1/f for a concave lens.

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  11. An object is placed 30cm away from a concave lens of focal length 15cm...

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  12. Draw a ray diagram to show the formation of final image at least dista...

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  13. Draw a ray dioagram for the formation of an image by a reflecting tele...

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  14. Derive the expression for the equivalent focal length of a combination...

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  15. Deduce the relation 1/v-1/u=1/f for a concave lens.

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  16. What is astigmatism? How it can be removed?

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  17. A man stands on vertical tower of height 20m. Calculate the distance u...

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  18. Draw the ray diagram for the formation of image by a compound microsco...

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  19. The objective lens and eye piece lens of a Compound microscope have fo...

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  20. Establish the lens maker's formula for a biconvex lens.

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