Home
Class 12
MATHS
The population of a village increases co...

The population of a village increases continuously at the rate proportional to the number of its inhabitants present at any time.If the population of the village was 20,000 in 1999 and 25000 in the year 2004, what will be the population of the village in 2009?

Text Solution

Verified by Experts

The correct Answer is:
31250
Promotional Banner

Topper's Solved these Questions

  • DIFFERENTIAL EQUATIONS

    NCERT GUJARATI|Exercise EXERCISE - 9.6|19 Videos
  • DETERMINANTS

    NCERT GUJARATI|Exercise Miscellaneous Exercises on Chapter 4|18 Videos
  • INTEGRALS

    NCERT GUJARATI|Exercise EXERCISE 7.12|41 Videos

Similar Questions

Explore conceptually related problems

The population of a city increases at the rate 3% per year. If at time t the population of city is p, then find equation of p in time t.

Number of villages with respect to their population as per India census 2011 are given below. Find the average population in each village.

The population of a village is 10,000. The daily requirement of water per day is 100 litres per person. The cuboidal water tank of the village measures 20 m times 15 m times 10 m. If the tank is filled completely, for how many days will the water of this tank last ?

A country has a food deficit of 10% . Its population grows continuously at a rate of 3% per year. Its annual food production every year is 4% more than that of the last year. Assuming that the average food requirement per person remains constant, prove that the country will become self-sufficient in food after n years, where n is the smallest integer bigger than or equal to (ln10-ln9)/(ln(1.04)-0.03)

A radioactive nucleus X decay to a nucleus Y with a decay with a decay Concept lambda _(x) = 0.1s^(-1) , gamma further decay to a stable nucleus Z with a decay constant lambda_(y) = 1//30 s^(-1) initialy, there are only X nuclei and their number is N_(0) = 10^(20) . Set up the rate equations for the population of X , Y and Z The population of Y nucleus as a function of time is given by N_(y) (1) = N_(0) lambda_(x)l(lambda_(x) - lambda_(y))( (exp(- lambda_(y)t)) Find the time at which N_(y) is maximum and determine the populations X and Z at that instant.

A great physicist of this century (P.A.M. Dirac) loved playing with numerical values of Fundamental constants of nature. This led him to an interesting observation. Dirac found that from the basic constants of atomic physics(c,e, mass of electron, mass of proton) and the gravitational constant G, he could arrive at a number with the dimension of time. Further, it was a very large number, its magnitude being close to the present estimate on the age of the universe (~ 15 billion years). From the table of fundamental constants in this book, try to see if you too can construct this number (or any other interesting number you can think of ). If its coincidence with the age of the universe were significant , what would this imply for the constancy of fundamental constants ?

A village, having a population of 4000, requires 150 litres of water per head per day. It has a tank measuring 20 m times 15 m times 6 m. For how many days will the water of this tank last ?

NCERT GUJARATI-DIFFERENTIAL EQUATIONS-MISCELLANEOUS EXERCISE
  1. For each of the differential equations given below, indicate its order...

    Text Solution

    |

  2. For each of the exercises given below, verify that the given function...

    Text Solution

    |

  3. Form the differential equation representing the family of curves give...

    Text Solution

    |

  4. Prove the x^(2) - y^(2) = c (x^(2) + y^(2))^(2) is the general solutio...

    Text Solution

    |

  5. Form the differential equation of the family of circles in the first q...

    Text Solution

    |

  6. Find the general solution of the differential equation (dy)/(dx) + sqr...

    Text Solution

    |

  7. Show that the general solution of the differential equation (dy)/(dx) ...

    Text Solution

    |

  8. Find the equation of the curve passing through the point (0, (pi)/(4))...

    Text Solution

    |

  9. Find the particular solution of the differential equation (1 + e^(2x)...

    Text Solution

    |

  10. Solve the differential equation y e^(x/y) dx = (x e^(x/y) + y^(2))dy (...

    Text Solution

    |

  11. Find a particular solution of the differential equation (x - y)(dx + d...

    Text Solution

    |

  12. Solve the differential equation [(e^(-2sqrtx))/(sqrtx) - (y)/(sqrtx)](...

    Text Solution

    |

  13. Find a particular solution of the differential equation (dy)/(dx) + y...

    Text Solution

    |

  14. Find a particular solution of the differential equation (x + 1)(dy)/(d...

    Text Solution

    |

  15. The population of a village increases continuously at the rate propor...

    Text Solution

    |

  16. The general solution of the differential equation (y dx - x dy)/(y ) =...

    Text Solution

    |

  17. The general solution of a differential equation of the type (dy)/(dx)...

    Text Solution

    |

  18. The general solution of the differential equation e^(x) dy + (y e^(x) ...

    Text Solution

    |