Home
Class 12
PHYSICS
A concave mirror produces an image of a ...

A concave mirror produces an image of a long vertical pin, placed 40 cm from the mirror, at the position of the object. Find the focal length of the mirror.

Text Solution

Verified by Experts

Given `u=upsilon=" 40 cm"`
`(1)/(f)=(1)/(upsilon)+(1)/(u)`
`(1)/(f)=(1)/(40)+(1)/(40)`
`(1)/(f)=(2)/(40)`
f = 20 cm.
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICAL AND INSTRUMENTS

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise SHORT ANSWER QUESTIONS|10 Videos

  • RAY OPTICAL AND INSTRUMENTS

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise LONG ANSWER QUESTIONS|10 Videos

  • RAY OPTICAL AND INSTRUMENTS

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise TEXTUAL EXAMPLES|18 Videos

  • NUCLEI

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise DAM SURE (VSAQ)|1 Videos

  • SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES , AND SIMPLE CIRCUITS

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise ADDITIONAL EXERCISES|8 Videos

Similar Questions

Explore conceptually related problems

A concave mirror forms a point sized image for an object placed at

How do you identify the focal point in focal length of concave mirror?

A concave mirror produces an image of 2 cm tall, when an object of 5 mm tall is placed at a distance of 10 cm from the mirror. Calculate the image distance and focal length of the mirror.

A concave mirror is made by cutting a portion of hollow glass sphere of radius 24 cm. Find the focal length of the mirror