Home
Class 12
PHYSICS
Which of the following statements is cor...

Which of the following statements is correct?

A

When a lens is dipped in water, magnitude of its focal length increases.

B

When a lens is dipped in water, magnitude of its focal length decreases

C

When a spherical mirror is dipped in water, magnitude of its focal length increases.

D

None of these.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • NEET MOCK TEST 12

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos
  • NEET MOCK TEST 14

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos
NTA MOCK TESTS-NEET MOCK TEST 13-MCQs (PHYSICS)
  1. A capacitor of capacitance 100(mu)F is charged by connecting it to a b...

    Text Solution

    |

  2. Positive charge q is given to each plate of a parallel plate air capac...

    Text Solution

    |

  3. Which of the following statements is correct?

    Text Solution

    |

  4. A 25 W, 220V bulb and 100W, 220V bulb are joined in series and connect...

    Text Solution

    |

  5. A solid, uncharged conducting sphere of radius 3a contains a concentri...

    Text Solution

    |

  6. Two point charges placed at a distance r in air exert a force f on eac...

    Text Solution

    |

  7. The root-mean-square (rms) speed of oxygen molecules (O(2)) at a certa...

    Text Solution

    |

  8. The pressure and volume of a given mass of gas at a given temperature ...

    Text Solution

    |

  9. Four spheres A, B, C and D of different metals but all same radius are...

    Text Solution

    |

  10. A man is standing between a stationary source and cliff. When he start...

    Text Solution

    |

  11. An earthquake generates both transverse (S) and longitudinal (P) sound...

    Text Solution

    |

  12. A pendulum has time period T for small oscillations. An obstacle P is ...

    Text Solution

    |

  13. A body is projected up with a velocity equal to 3//4th of the escape v...

    Text Solution

    |

  14. If the density of a planet is constant, then the curve between value o...

    Text Solution

    |

  15. Why are electric field lines perpendicular at a point on an equipotent...

    Text Solution

    |

  16. Three rods each of length L and mass M are placed along X, Y and Z axi...

    Text Solution

    |

  17. A uniform circular disc placed on a horizontal rough surface has initi...

    Text Solution

    |

  18. A ball of mass m approaches a wall of mass M (M>>m), with speed 2 ms^(...

    Text Solution

    |

  19. Consider the nuclear reaction X^(200)toA^(110)+B^(80)+10n^(1). If the ...

    Text Solution

    |

  20. The magnitude of the force (in newtons) acting on a body varies with t...

    Text Solution

    |