Home
Class 12
PHYSICS
A concave mirror having a radius of curv...

A concave mirror having a radius of curvature 40 cm is placed in front of an illuminated point source at a distance of 30 cm from it. Find the location of the image.

Text Solution

Verified by Experts

The correct Answer is:
B, C, D
`u=-30 cm, R=-40 cm
From the mirror equation
`1/v+1/u=2/R`
`rarr 1/v=2/R-1/u`
`=2/(-40)-1/(-30)=1/(-20)1/30`
`=(-30+20)/(30xx20)=(-10)/(30x20)`
`=-1/60`
or v=-60cm ltbr. So, the image will be formed is distane of 60 cm in front of the mirror
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

A small object is placed 50 cm to the left of a thin convex lens of focal length 30 cm. A convex spherical mirror of radius of curvature 100 cm is placed to the right of the lens at a distance of 50 cm. The mirror is tilted such that the axis of the mirror is at an angle theta =30degree to the axis of the lens, as shown in the figure If the origin of the coordinate system is taken to be at the centre of the lens, the coordinates (in cm) of the point (x,y) at which the image is formed are

In the figure shown L is converging lens of focal length 10 cm and M is a concave mirror of radius of curvature 20 cm . A point object O is placed in front of the lens at a distance 15 cm . AB and CD are optical axes of the lens mirror respectively. Find the coordinates of the final image formed by this system taking O as origin. The distance between CD & AB is 1mm.

Two concave mirrors each of radius of curvature 40cm are placed such that their principla axes are parallel to each other and at a distance of 1cm to each other. Both the mirrors are at a distance of 100cm to each other. Consider first reflection at M_(1) and then at M_(2) , find the coordinates of the image thus formed. Take location of object as the origin

The size of the image of an object, which is at infinity, as formed by a convex lens of focal length 30 cm is 2 cm. If a concave lens of focal length 20 cm is placed between the convex lens and the image at a distance of 26 cm from the convex lens, calculate the new size of the image

A convex mirror and convex lens of radius of curvature 20 cm are placed on same axis with 30 cm separation. A point-like object is placed at 20 cm from convex lens and its image by this combination is obtained at object. What will be focal length of convex lens ?

A slab of glass, of thickness 6 cm and refractive index mu =1.5 is placed in front of a concave mirror. If the radius of curvature of the mirror is 40 cm and the reflected image coincides with the object, then the distance of the object from the mirror is

Radius of curvature of a biconvex lens is 20 cm. An object of 2 cm height is placed at 30 cm from lens, then which option represents the image ?

The diameter of the sun subtends an angle of 0.5^(@) at the pole of the concave mirror. The radius of curvature of the mirror is 1.5 m. Find the diameter of the image of the sun. Consider the distance of sun from the mirror infinite

Two identical glass rods S_(1) and S_(2) (refractive index=1.5) have one convex end of radius of curvature 10 cm. They are placed with the curved surfaces at a distance d as shown in the figure, with their axes (shown by the dashed line) aligned. When a point source of light P is placed inside rod S_(1) on its axis at a distance of 50 cm from the curved face, the light rays emenating from it are found to be parallel to the axis inside S_(2) . The distance d is

A convex lens of focal length 30 cm , a concave lens of focal length 120 cm , and a plane mirror are arranged as shown . For an object kept at a distance of 60 cm from the convex lens, the final image, formed by the combination , is a real image , at a distance of : |"Focal length" | = |"Focal length"| = 30 cm " " =120 cm

HC VERMA-GEOMETRICAL OPTICS-Exercises
  1. A concave mirror having a radius of curvature 40 cm is placed in front...

    Text Solution

    |

  2. A concave mirror forms an image of 20 cm high object on a screen place...

    Text Solution

    |

  3. A concave mirror has a focal length of 20 cm. Find the position or pos...

    Text Solution

    |

  4. A 1 cm object is placed perpendicular to the principal axis of a conve...

    Text Solution

    |

  5. A candle flame 1.6 cm high is imaged in a ball bearing of diameter 0.4...

    Text Solution

    |

  6. A 3 cm tall object is placed at a distance of 7.5 cm from a convex mir...

    Text Solution

    |

  7. A U-shaped wire is placed before a concave mirror having radius of cur...

    Text Solution

    |

  8. A man uses a concave mirror for shaving. He keeps his face at a distan...

    Text Solution

    |

  9. Find the diameter of the image of the moon formed by a spherical conc...

    Text Solution

    |

  10. A particle goes in a circle of radius 2.0 cm. A concave mirror of foca...

    Text Solution

    |

  11. A concave mirror of radius R is kept on a horizontal table. Water (ref...

    Text Solution

    |

  12. A point source S is placed midway between two converging mirrors havin...

    Text Solution

    |

  13. A converging mirror M1 a point source S and a diverging mirror M2 are ...

    Text Solution

    |

  14. A light ray falling at an angle of 45^@ with the surface of a clean sl...

    Text Solution

    |

  15. A pole of length 1.00 m stands half dipped in a swimming pool with wat...

    Text Solution

    |

  16. A small piece of wood is floating on the surface of a 2.5 m deep lake....

    Text Solution

    |

  17. An object P is focussed by a microscope M. A glass slab of thickness 2...

    Text Solution

    |

  18. A vessel contains water up to a height of 20 cm and above it an oil up...

    Text Solution

    |

  19. Locate the image of the point P as seen by the eye in the figure

    Text Solution

    |

  20. k transparent slabs are arranged one over another. The refractive indi...

    Text Solution

    |