Home
Class 10
PHYSICS
At what distance from a concave mirror o...

At what distance from a concave mirror of focal length 10 cm should an object be plced so that :
(a) its real image is formed 20 cm from the mirror ?
(b) its virtual image is formed 20 cm form the mirror ?

Text Solution

AI Generated Solution

To solve the problem, we will use the mirror formula: \[ \frac{1}{f} = \frac{1}{v} + \frac{1}{u} \] Where: - \(f\) = focal length of the mirror ...
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • REFLECTION OF LIGHT

    LAKHMIR SINGH & MANJIT KAUR|Exercise Multiple Choice Questions (MCQs)|1 Videos

  • REFLECTION OF LIGHT

    LAKHMIR SINGH & MANJIT KAUR|Exercise Very Short Answer Type Questions|1 Videos

  • REFLECTION OF LIGHT

    LAKHMIR SINGH & MANJIT KAUR|Exercise Very Short Answer Type Questions|1 Videos

  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    LAKHMIR SINGH & MANJIT KAUR|Exercise NCERT BOOK|2 Videos

  • REFRACTION OF LIGHT

    LAKHMIR SINGH & MANJIT KAUR|Exercise VERY SHORT ANSWER TYPE QUESTIONS|1 Videos

Similar Questions

Explore conceptually related problems

A plane mirror is placed at a distance of 50 cm from a concave mirror of focal length 16 cm. Where should a short object be placed between the mirrors and facing both the mirrors so that its virtual image in the plane mirror coincides with the real image in concave mirror? What is the ratio of the sizes of the two images?

A concave mirror has a focal length of 5 cm. When an object is placed at a distance of 15 cm from the mirror, then the image is formed in front of the mirror at ____cm.

Knowledge Check

  • An object is at 20 cm from a concave mirror of focal length 10 cm, the nature of image is

    A
    Real and inverted
    B
    Virtual and erect
    C
    Real and 3 times magnified
    D
    Real and 2 times magnified

  • An object is placed 40 cm from a concave mirror of focal length 20 cm. The image formed is

    A
    Real, inverted and same in size
    B
    Real, inverted and smaller
    C
    Virtual, erect and larger
    D
    Virtual, erect and smaller

  • What is the distance of an object from a concave mirror of focal length 20 cm so that the size of the real image is three times the size of the object ?

    A
    40 cm
    B
    60 cm
    C
    26.67 cm
    D
    6.67 cm

    • Similar Questions

    Explore conceptually related problems

    We have a concave mirror of 10 cm focal length. Minimum distance between a real object and its real image formed by the mirror will be-

    Object is placed 15 cm from a concave mirror of focal length 10 cm, then the nature of the image formed will be

    If an object is 40 cm away from a concave mirror of focal length 20 cm, the image will be

    An object is kept at a distance 20 cm from a convex mirror of focal length 20 cm. The image will form at

    An object is placed at a distance of 20 cm from the pole of a concave mirror of focal length 10 cm. The distance of the image formed is

    Home
    Profile