Home
Class 12
PHYSICS
A depth measuring device emits a signal ...

A depth measuring device emits a signal of 20000 vibrations per second which has speed of 1000 m/s in water. The pulse is reflected from the ocean bed and returns to the device in 0.5 s after the signal is emitted. The depth of the ocean is

A

500 m

B

750 m

C

250 m

D

1000 m

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • MOCK TEST 7

    AAKASH INSTITUTE ENGLISH|Exercise Exercise|90 Videos

  • MOCK TEST 6

    AAKASH INSTITUTE ENGLISH|Exercise Example|365 Videos

  • MOCK TEST 8

    AAKASH INSTITUTE ENGLISH|Exercise Example|30 Videos

Similar Questions

Explore conceptually related problems

An ultrasound signal of frequency 50 kHz is sent vertically into sea water. The signal gets reflected from the ocean bed and returns to the surface 0.80 s after it was emitted. The speed of sound in sea water is 1500ms^-1 . a. Find the depth of the sea. b. What is the wavelength of this signal in water.

A tuning fork makes 256 vibrations per second in air. When the speed of sound is 330 m//s , the wavelength of the note emitted is :

The speed of sound in water is 1500 m/s. A boat man hears an echo 3 s after sending a sound pulse into the sea. What is the depth of the sea?

A string of linear mass density 0.5 g cm^-1 and a total length 30 cm is tied to a fixed wall at one end and to a frictionless ring at the other end. The ring can move on a vertical rod. A wave pulse is produced on the string which moves towards the ring at a speed of 20 cm s^-1 . The pulse is symmetric about its maximum which is located at a distance of 20 cm from the end joined to the ring. (a) Assuming that the wave is reflected from the ends without loss of energy, find the time taken by the string to regain its shape. (b) The shape of the string changes periodically with time. Find this time period. (c) What is the tension in the string ?

A sonar device on a submarine sends out a signal and receives an echo 5 s later. Calculate the speed of sound in water if the distance of the object from the submarine is 3625 m ,

In a SONAR, ultrasonic waves are sent into the sea water and the reflected waves from a sunken ship are received after 2.0 s. If the velocity of waves in sea water is 1450 m s^(-1) , find the depth of the sunken ship.

A table is revolving on its axis at 5 revolutions per second. A sound source of frequency 1000 Hz is fixed on the table at 70 cm from the axis. The minimum frequency heard by a listener standing at a distance from the table will be (speed of sound =352m//s ).

A small source of sound vibrating frequency 500 Hz is rotated in a circle of radius (100)/(pi) cm at a constant angular speed of 5.0 revolutions per second. The speed of sound in air is 330(m)/(s) . Q. If the observer moves towards the source with a constant speed of 20(m)/(s) , along the radial line to the centre, the fractional change in the apparent frequency over the frequency that the source will have if considered at reat at the centre will be

A small source of sound vibrating frequency 500 Hz is rotated in a circle of radius (100)/(pi) cm at a constant angular speed of 5.0 revolutions per second. The speed of sound in air is 330(m)/(s) . Q. For an observer who is at rest at a great distance from the centre of the circle but nearly in the same plane, the minimum f_(min) and the maximum f_(max) of the range of values of the apparent frequency heard by him will be

A small source of sound vibrating frequency 500 Hz is rotated in a circle of radius (100)/(pi) cm at a constant angular speed of 5.0 revolutions per second. The speed of sound in air is 330(m)/(s) . Q. For an observer who is at rest at a great distance from the centre of the circle but nearly in the same plane, the minimum f_(min) and the maximum f_(max) of the range of values of the apparent frequency heard by him will be

AAKASH INSTITUTE ENGLISH-MOCK TEST 7-Exercise
  1. The speed of sound in oxygen gas at temperature 27°C is v0. If sound t...

    Text Solution

    |

  2. A transverse wave of amplitude 2 m, wavelength 4 m and frequency 6 Hz ...

    Text Solution

    |

  3. A depth measuring device emits a signal of 20000 vibrations per second...

    Text Solution

    |

  4. A system absorbs 1500 joule of energy as heat and produces 500 joule o...

    Text Solution

    |

  5. The angular frequency of a particle in a progressive wave in an elasti...

    Text Solution

    |

  6. Choose the correct statement about the mechanical wave.

    Text Solution

    |

  7. The displacement equation of a travelling wave puise is given as [y= 1...

    Text Solution

    |

  8. The time period of simple pendulum inside a stationary lift is T. If l...

    Text Solution

    |

  9. The force on a body executing SHM is 4 N when the displacement from me...

    Text Solution

    |

  10. The differential equation representing the S.H.M. of particle is [16 (...

    Text Solution

    |

  11. A spring of force constant k is connected with centre of a disc of mas...

    Text Solution

    |

  12. A particle of mass m executing SHM with angular frequency omega0 and a...

    Text Solution

    |

  13. A spring of force constant 'k' is cut into four equal parts one part i...

    Text Solution

    |

  14. Acceleration displacement (a-x) graph of a particle executing S.H.M. i...

    Text Solution

    |

  15. Choose the incorrect statement among the following

    Text Solution

    |

  16. A particle is moving along the y-axis according to the equation[ y = a...

    Text Solution

    |

  17. If two objects A and B of same volume and same density are dropped fro...

    Text Solution

    |

  18. The dimensions of Planck's constant is identical to

    Text Solution

    |

  19. A fixed mass of an ideal gas is compressed in such a manner that its p...

    Text Solution

    |

  20. Rain is falling vertically downwards with respect to ground. If a girl...

    Text Solution

    |