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Two lenses of powers +5D and - 3D are in...

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

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R G PUBLICATION-RAY OPTICS AND OPTICAL INSTRUCMENTS-EXERCISE
  1. Establish the following relation for total deviation delta of a ray li...

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  2. State two important differences between interference and diffraction.

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

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

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

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

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

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

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

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

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

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

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

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

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  15. Two identical equiconvex lenses of refractive index 3/2 and focal leng...

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  16. Draw the ray diagram to show the location of the principal focus of a ...

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  17. A square loop of side 3cm is placed 25 cm away from a Convex mirror of...

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  18. A convex lens and a Concave lens of focal length 0.1m each are placed ...

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  19. You are given a prism in which the two refracting surfaces are at 90^@...

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  20. You are given a prism in which the two refracting surfaces are at 90^@...

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