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An object of size 3.0 cm is placed 14 cm...

An object of size 3.0 cm is placed 14 cm in front of a concave lens of focal length 21cm. Descibe the image produced by the lens. What happens if the object is moved further away from the lens?

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erect, virtual at 8.4 cm
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An object of size 3.0 cm is placed 14 cm in front of a concave lens of focal length 21 cm . Describe the image produced by the lens. What happens if the object is moved further from the lens ?

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An object is placed at a distance 24 cm in front of a convex lens of focal length 8 cm. Calculate the distance of the image from the lens.

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An object is placed at a distance of 12 cm from a convex lens of focal length 8 cm. Find : the position of the image

An object of length 2.0 cm is placed perpendicular to the principal axis of a convex lens of focal length 12 cm. Find the size of the image of the object is at a distance of 8.0 cm from the lens.

A point object is placed on the axis in front of a convex lens of focal length 30 cm. The distance of the object from the lens is 45 cm. If the lens is moved away from object by 1 mm and also the object is moved apart from the line joining the object and optical centre by 1 mm the displacement of the image has magnitude-

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AAKASH SERIES-RAY OPTICS-PROBLEMS ( LEVEL-I)
  1. The radii of curvature of a lens are + 20 cm and + 30 cm. The material...

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  2. The radii of curvature of a lens are + 20 cm and + 30 cm. The material...

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  3. An object of size 3.0 cm is placed 14 cm in front of a concave lens of...

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  4. A concave - convex lens has faces of radii 4 cm and 3 cm respectively ...

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  5. A concave - convex lens has faces of radii 4 cm and 3 cm respectively ...

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  6. A concave - convex lens has faces of radii 4 cm and 3 cm respectively ...

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  7. If the angle of prism is 60^@ and the angle of minimum deviation is al...

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  8. A ray of light passing through a prism having refractive index sqrt2 s...

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  9. A ray of light passes through an equilateral glass prism, such that th...

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  10. A ray of light is incident at an angle of 60^(@) on the face of a pris...

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  11. A ray of light is incident normally on one of the refracting surfaces ...

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  12. For an equilateral prism, it is observed that when a ray strikes grazi...

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  13. A flint glass prism and a crown glass prism are to be combined in such...

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  14. An air bubble is seen inside a solid sphere of glass (n=1.5) of 4.0 cm...

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  15. A 5.0 diopter lens forms a virtual image which is 4 times the object p...

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  16. A convex lens of focal length 10 cm is painted black at the middle por...

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  17. A convex lens of focal length 10 cm is painted black at the middle por...

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  18. A 35 mm film is to be projected on a 20 m wide screen situated at a di...

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  19. A small object area 6 cm xx 3 cm is placed (plane normal to principal ...

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  20. What is the focal length of a convex lens of focal length 30 cm in con...

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