Home
Class 12
BIOLOGY
Assertion: In displacement method of fin...

Assertion: In displacement method of finding focal length of a convex lens its magnification in one position of lens is `+2,` then magnification in another position of lens should be `-1/2.`
Reason:This method can't be applied for a concave lens.

A

If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.

B

If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.

C

If Assertion is True but the Reason is False.

D

If both Assertion & Reason are False.

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ANATOMY OF FLOWERING PLANTS

    ALLEN|Exercise S|33 Videos

Similar Questions

Explore conceptually related problems

Calculate focal length of given lens if the magnification is -0.5 .

Focal length of concave lens shown in figure is 60 cm. Find image position and its magnification.

In displacement method distance of object from convex lens of focal length 20 cm in one position 60 cm. Then

Focal length of a convex lense in air is 20cm. and of concave lens 40cm. Find the position of final image.

In question 118, if m_(1) and m_(2) are the magnifications for two positions of the lens, then

The focal length of a converging lens is 8 cm. Fins the magnification power when it is used as a reading lens to form the image at near point.

Focal length of the convex lens shown in figure is 20cm. Find the image position and image velocity.

In the displacement method , a convex lens is placed in between an object and a screen . If one of them magnification is 3 and the displacement of the lens between the two positions is 24 cm , then the focal length of the lens is :-

In a displacement method the distance between the object and the screen is 70 cm and the focal length of the lens is 16 cm, find the separations of the magnified and diminished image position of the lens.

Distance of an object from a concave lens of focal length 20 cm is 40 cm. Then linear magnification of the image

ALLEN-AIIMS 2019-BIOLOGY
  1. Assertion :- The sun appears oval shape at sunrise. Reason :- At t...

    Text Solution

    |

  2. Assertion :- Mirage appears in hot summer days. Reason :- Refracti...

    Text Solution

    |

  3. Assertion: In displacement method of finding focal length of a convex ...

    Text Solution

    |

  4. Assertion :- When monochromatic light is incident on a surface separat...

    Text Solution

    |

  5. Assertion :- Lens formula can be applied only for thin lenses Reaso...

    Text Solution

    |

  6. Assertion :- Bird flying high up in air does not cast shadow on the ea...

    Text Solution

    |

  7. Assertion :- Upon the displacement of charges within a closed surface ...

    Text Solution

    |

  8. If net charge enclosed by a Gaussian surface is zero, then Asserti...

    Text Solution

    |

  9. Assertion :- When a point charge q is placed inside the cavity of a co...

    Text Solution

    |

  10. If the electric potential of the inner shell is 10 V and that of the o...

    Text Solution

    |

  11. Assertion :- Solubility of alkali metal hydroxide increases on moving ...

    Text Solution

    |

  12. Assertion :- Bond energy of F2 is less than Cl2. Reason :- Bond len...

    Text Solution

    |

  13. Assertion :- XeF4 exists while XeH4 does not exist. Reason :- In Xe...

    Text Solution

    |

  14. Assertion :- All diamagnetic species are colourless Reason :- All p...

    Text Solution

    |

  15. Assertion :- Every collision among reactant molecules is not responsib...

    Text Solution

    |

  16. Assertion :- Most dangerous sexually transmitted disease is AIDS. R...

    Text Solution

    |

  17. Assertion :- Advance stage of cancer shows contact inhibition. Reas...

    Text Solution

    |

  18. Assertion :- Innate immunity is of great importance in early life year...

    Text Solution

    |

  19. Assertion :- Most dangerous form of malaria is falciparum malaria. ...

    Text Solution

    |

  20. Assertion :- Heroin is a CNS deprassant. Reason :- Heroin causes de...

    Text Solution

    |