Home
Class 11
PHYSICS
A machine gun is mounted on an armored c...

A machine gun is mounted on an armored car moving with a speed of `20 ms^(-1)`. The gun point against the direction of motion of car. The muzzle speed of bullet is equal to speed of sound in air i.e., `340 ms^(-1)`. The time difference between bullet actually reaching and sound of firing reaching at a target `544 m` away from car at the instant of firing is reaching at a target `544 m` away from car at the instant of firing is

A

`1.2 s`

B

`0.1 s`

C

`1 s`

D

`10 s`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • SOUND WAVES

    RESONANCE|Exercise Exercise- 2 PART - I|25 Videos

  • SOUND WAVES

    RESONANCE|Exercise Exercise- 2 PART - II|20 Videos

  • SOUND WAVES

    RESONANCE|Exercise Exercise- 1 PART - I|34 Videos

  • SIMPLE HARMONIC MOTION

    RESONANCE|Exercise Exercise|28 Videos

  • STRING WAVES

    RESONANCE|Exercise Exercise|32 Videos

Similar Questions

Explore conceptually related problems

A car is moving with 90 km h^(-1) blows a horn of 150 Hz, towards a cliff. The frequency of the reflected sound heard by the driver will be (speed of sound in air is 340 ms^(-1) )

A machine gun is mounted on the top of a tower 60 m At what angle showld the gun be inclined to cver a vaximu range of firing on the groun below? The muzzle speed of the bullet is 90 ms^(-1) take g= 10 ms^(1) .

A machine gun is mounted on the top of a tower of height h . At what angle should the gun be inclined to cover a maximum range of firing on the ground below ? The muzzle speed of bullet is 150 ms^-1 . Take g = 10 ms^-2 .

A bullet of mass 0.1 kg is fired with a speed of 100 ms^(-1) . The mass of gun being 50 kg. Then, the velocity of recoil becomes

A bullet emerges from a barrel of length 1.2 m with a speed of 640 ms^(1) . Assuming constant acceleration, after the gun is fired is

A machine gun fires 360 bullets per minute, with a velocity of 600 ms^(-1) .If the power of the gun is 5.4 kW then mass of each bullet is

A car starts at point A with a speed of 40 kmph and reaches point B. Then the car returns to the starting point A with a speed of 60 kmph. What is average speed of the car?

A machine gun fires n bullets per second each of mass m . If the speed of each bullet is v, then the force of recoil is

A machine gun fires 60 bullets per minute with a velocity of 700ms^(-1) . If each bullet has a mass of 50g, find the power of the gun.

RESONANCE-SOUND WAVES-Exercise- 1 PART - II
  1. A place of cork is floating on water in a small tank. The cork oscilla...

    Text Solution

    |

  2. The frequency of a man's voice is 300 Hz and its wavelength is 1 meter...

    Text Solution

    |

  3. A machine gun is mounted on an armored car moving with a speed of 20 m...

    Text Solution

    |

  4. The ratio of speed of sound in monomatomic gas to that in water vapour...

    Text Solution

    |

  5. Under simuliar conditions of temperature and pressure, in which of the...

    Text Solution

    |

  6. v(rms), v(av) and v(mp) are root mean square average and most probable...

    Text Solution

    |

  7. A sound of intensity I is greater by 3.0103 dB from anoterh sound of i...

    Text Solution

    |

  8. For a sound source of intensity IW//m^(2), corresponding sound level i...

    Text Solution

    |

  9. The sound intensity is 0.008W//m^( 2) at a distance of 10 m from an is...

    Text Solution

    |

  10. What happens when a sound wave interfers with another wave of same fre...

    Text Solution

    |

  11. Sound waves from a tuning fork F reach a point P by two separate route...

    Text Solution

    |

  12. Sound signal is sent through a composite tube as shown in the figure. ...

    Text Solution

    |

  13. A person is talking in a small room and the sound intensity level is 6...

    Text Solution

    |

  14. An inteference is observed due to two coherent sources A and B separat...

    Text Solution

    |

  15. When a sound wave is reflected from a wall the phase difference betwee...

    Text Solution

    |

  16. If lambda(1), lambda(2), lambda(3) are the wavelengths of the waves gi...

    Text Solution

    |

  17. An open organ pipe of length L vibrates in its fundamental mode. The p...

    Text Solution

    |

  18. The fundamental frequency of a closed organ pipe is same as the first ...

    Text Solution

    |

  19. Two identical tubes A and B are kept in air and water respetively as s...

    Text Solution

    |

  20. A tube of diameter d and of length l unit is open at both ends. Its fu...

    Text Solution

    |