Home
Class 12
MATHS
A man of height 2m walks directly away f...

A man of height 2m walks directly away from a lamp of height 5 m on a level road at `3m//s`. The rate at which the length of his shadow is increasing is

A

`1m//s`

B

`2m//s`

C

`3m//s`

D

`4m//s`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • APPLICATIONS OF DERIVATIVES

    TARGET PUBLICATION|Exercise COMPETITIVE THINKING|161 Videos

  • APPLICATIONS OF DERIVATIVES

    TARGET PUBLICATION|Exercise EVALUATION TEST|20 Videos

  • APPLICATIONS OF DERIVATIVES

    TARGET PUBLICATION|Exercise EVALUATION TEST|20 Videos

  • APPICATIONS OF DEFINITE INTEGRAL

    TARGET PUBLICATION|Exercise EVALUATION TEST|18 Videos

  • BINOMIAL DISTRIBUTION

    TARGET PUBLICATION|Exercise EVALUTION TEST|12 Videos

Similar Questions

Explore conceptually related problems

A man of 2m height walks at a uniform speed of 6kmh^(-1) away from a lamp post of 6m height. The rate at which the length of his shadow increase in

A man of height 160 cm walks at a rate of 1.1 m/sec from a lamp post which 6m high. Find the rate at which the length of his shadow increases when he is 1m away from the lamp post.

A man of height 1.7 m walks at a uniform speed of 6.6 m/min from a lamp post which is 5m high.Find the rate at which the length of his shadow increases.

A man 2 metre high walks at a uniform speed 5 metre/hour away from a lamp post 6 metre high. The rate at which the length of his shadow increases is

A man 2 metres tall walks away from a lamp post 5 metres height at the rate of 4.8 km/hr. The rate of increase of the length of his shadow, is

A man of 2 metres height walks at a uniform speed of 6 km/hr away from a lamp post of 6 metres high. Find the rate at which the length of his shadow increases.

A man 2 metres high, walks at a uniform speed of 5 km per hour away from a lamp post, 6 metres high. The rate at which the length of his shadow increases is

A man 2 metres high walks at a uniform speed of 5km/hr away from a lamp-post 6 metres high.Find the rate at which the length of his shadow increases.

A man of height 'h' is walking away from a street lamp with a constant speed 'v'. The height of the street lamp is 3h. The rate at which the length of the man's shadow is increasing when he is at a distance 10 h from the base of the street lamp is

TARGET PUBLICATION-APPLICATIONS OF DERIVATIVES-CRITICAL THINKING
  1. What is the maximum value o fx y subject to the condition x+y=8 ?

    Text Solution

    |

  2. If f(x)=2x^(3)-21x^(2)+36x-30, then which one of the following is corr...

    Text Solution

    |

  3. The number of values of x where the function f(x)=cosx+cos(sqrt(2)x) a...

    Text Solution

    |

  4. The maximum and minimum values of x^3-18x^2+96x in interval (0,9) are

    Text Solution

    |

  5. If PQ and PR the two sides of a triangle, then the angle between them ...

    Text Solution

    |

  6. The maximum and minimum values of the function |sin 4x+3| are

    Text Solution

    |

  7. The function f(x)=|pr-9|+r|x|,x in (-infty,infty) where pgt0,qgt0,rgt0...

    Text Solution

    |

  8. The minimum value of function f(x)=3x^4-8x^3+12x^2-48x+25 on [0,3] is ...

    Text Solution

    |

  9. The minimum values of (x-alpha)(x-beta) is

    Text Solution

    |

  10. Divide 20 into two parts such that the product of the cube of one and ...

    Text Solution

    |

  11. One maximum point of sin^pxcos^qx is

    Text Solution

    |

  12. A wire of length a is cut into two parts which are bent, respectively,...

    Text Solution

    |

  13. The length of the perimeter of a sector of a circle is 20 cm, the maxi...

    Text Solution

    |

  14. A running track of 440 ft is to be laid out enclosing a football field...

    Text Solution

    |

  15. A box is to be made from a sheet 12times12 sq.cm, by cutting equals sq...

    Text Solution

    |

  16. The maximum height is reached is 5s by a stone thrown vertically upwar...

    Text Solution

    |

  17. A man of height 2m walks directly away from a lamp of height 5 m on a ...

    Text Solution

    |

  18. A square plate is contracting at the uniform rate of 2 cm^(2)//sec. If...

    Text Solution

    |

  19. IF A+B=pi/2, the maximum value of cos Acos B is

    Text Solution

    |

  20. If f(x) satisfies the condition for Rolle's heorem on [3,5] then under...

    Text Solution

    |