Home
Class 10
PHYSICS
A diverging lens has a focal length whos...

A diverging lens has a focal length whose focal length is 80 cm?

Text Solution

Verified by Experts

`-33.3` D
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • REFRACTION OF LIGHT

    LAKHMIR SINGH & MANJIT KAUR|Exercise MULTIPLE CHOICE QUESTIONS|1 Videos

  • REFLECTION OF LIGHT

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

  • SOURCES OF ENERGY

    LAKHMIR SINGH & MANJIT KAUR|Exercise NCERT|8 Videos

Similar Questions

Explore conceptually related problems

A diverging lens has a focal length of 0.10 m. The power of this lens will be:

A converging lens has a focal length of 50cm. The power of this lens is :

Knowledge Check

  • A convex lens has 9 cm focal length and a concave lens has – 18 cm focal length. The focal length of the combination in contact will be

    A
    9 cm
    B
    `-18 cm`
    C
    `-9 cm`
    D
    `18 cm`

  • The objective of terrestrial telescope has a focal length of 80 cm and its magnifying power is 20, when adjusted for parallel rays. If the erecting lens has focal length 20 cm, the total length of such a telescope is

    A
    164 cm
    B
    124 cm
    C
    100 cm
    D
    84 cm

  • A diverging lens with magnitude of focal length 25 cm is placed at a distance of 15 cm from a converging lens of magnitude of focal length 20 cm . A beam of parallel light falls on the diverging lens. The final image formed is.

    A
    real and at a distance of `40 cm` from the divergent lens.
    B
    real and at a distance of `6 cm` from the convergent lens.
    C
    real and at a distance of `40 cm` from convergent lens.
    D
    virtual and at a distance of `40 cm` from convergent lens.

    • Similar Questions

    Explore conceptually related problems

    A lens produces a magnification of - 0.5. Is this a converging or diverging lens ? If the focal length of the lens is 6 cm, draw a ray diagram showing the image formation in this case.

    A lens produces a magnification of -0.5. Is this a converging or diverging lens? If the focal length of the lens is 6 cm, draw a ray diagram showing the image formation in this case.

    What is the power of a convex lens whose focal length is 80 cm?

    A convex lens of focal length 10 cm is placed in contact with a concave lens of focal length 20 cm. The focal length of this combination of lenses will be:

    A converging lens is kept coaxially in contact with diverging lens--- both the lenses being of equal focal lengths. What is the focal length of the combination ?

    Home
    Profile