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An Object is placed at a distance of 90 ...

An Object is placed at a distance of 90 cm from a screen. To cast an image of magnification 2 on the screen, what type of spherical mirror is required ? Determine the position of the mirror and its focal length.

Text Solution

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The correct Answer is:
concave mirror, 90 cm, 60 cm
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Knowledge Check

  • If an object is placed at a distance of 40 cm from a concave mirror of focal length 20 cm , them the image wil be

    A
    virtual and inverted
    B
    real and erect
    C
    real, inverted and diminished
    D
    real, inverted and same size as the object

  • An object is placed at a distance of 20 cm from a concave mirror of focal lenght 10 cm. What is the image distance?

    A
    20 cm
    B
    6.67 cm
    C
    10 cm
    D
    30 cm

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