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A person with a normal near point (25 cm...

A person with a normal near point `(25 cm)` using a compound microscope with an objective of focal length `8.0 mm` and eye piece of focal length `2.5 cm` can bring an object placed `9.0 cm` from the objective in sharp focus. What is the separation between the two lenses ? Calculate the magnifying power of the microscope ?

Text Solution

AI Generated Solution

To solve the problem step by step, we will follow the physics principles related to lenses and magnification. ### Given Data: - Near point of the person, \( D = 25 \, \text{cm} \) - Focal length of the objective lens, \( f_o = 8 \, \text{mm} = 0.8 \, \text{cm} \) - Focal length of the eyepiece lens, \( f_e = 2.5 \, \text{cm} \) - Object distance from the objective lens, \( u_o = -9 \, \text{cm} \) (negative as per sign convention) ...
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A person with a normal near point (25 cm) using a compound microscope with objective of focal length 8.0 mm and an eyepiece of focal length 2.5 cm can bring an object placed at 9.0 mm from the objective in sharp focus. What is the separation between the two lenses? Calculate the magnifying power of the microscope.

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Knowledge Check

  • A compound microscope consists of an objective lens with focal length 1.0 cm and eye piece of the focal length 2.0 cm and a tube 20 cm from eye lens, the distance between the two lenses is

    A
    `6.00 cm`
    B
    `7.75 cm`
    C
    `9.25 cm`
    D
    `11.0 cm`
  • A perons with a normal near point (25cm) uses a compound microscope consisting of an objective lens of focal length 8.0 mm and an eye-lense of focal length 2.5 cm. A small objective placed at a distance of 9.0 mm in front of the objective lens produces an image, which is then magnified by the eye-lens to produce a virtual image at the near point. Assume that the eye is placed close to the eye-piece. The magnifying power of the microscope is

    A
    34
    B
    8
    C
    11
    D
    88
  • A perons with a normal near point (25cm) uses a compound microscope consisting of an objective lens of focal length 8.0 mm and an eye-lense of focal length 2.5 cm. A small objective placed at a distance of 9.0 mm in front of the objective lens produces an image, which is then magnified by the eye-lens to produce a virtual image at the near point. Assume that the eye is placed close to the eye-piece. The distance between the objective and the eye-lens is

    A
    7.20 cm
    B
    9.47 cm
    C
    2.27 cm
    D
    4.93 cm
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