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"A convex lens can form a magnified erect as well as magnified inverted image of an object placed in front of it." Draw ray diagram to justify this statement stating the position of the object with respect to the lens in each case.

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#### Solution

(a) Magnified erect image (When the object is placed between O and F_{1})

(b) Magnified inverted image (When the object is placed between F_{1} and 2F_{1})

#### RELATED QUESTIONS

(a) Draw a ray diagram to show the formation of image by a concave lens when an object is placed in front of it.

(b) In the above diagram mark the object distance (*u*) and the image distance (*v*) with their proper signs (+ve or –ve as per the new Cartesian sign convention) and state how these distances are related to the focal length (*f*) of the concave lens in the case.

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Image-Distance v (cm) |

1 | –60 | +12 |

2 | –30 | +15 |

3 | –20 | +20 |

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5 | –12 | +60 |

6 | –9 | +90 |

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Points |
Answer |

(i) Position of the object | |

(ii) Position of the image | |

(iii) Size of the image | |

(iv) Nature of the image |

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