Home
Class 12
PHYSICS
The driver of a car treavelling with spe...

The driver of a car treavelling with speed `30 ms ^(-1)` toward a hill sounds a horn of frequenvy 600 Hz. If the velocity of sound in air is `300ms^(-1)` the frequency of reflected sound as heard by diver is

A

555.5 Hz

B

720 Hz

C

500 Hz

D

550 Hz

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • WAVES

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT ( SECTION-D ( Assertion - Reason Type Questions ))|12 Videos

  • WAVES

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT ( SECTION-B ( Objective type Questions ))|45 Videos

  • WAVE OPTICS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-J (Aakash Challengers question))|1 Videos

  • WORK, ENERGY AND POWER

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (SECTION - D)|13 Videos

Similar Questions

Explore conceptually related problems

The driver of a car travelling with speed 30ms^-1 towards a hill sounds a horn of frequency 600 Hz. If the velocity of sound in air is 330ms^-1 , the frequency of reflected sound as heard by driver is

A car travels at a speed of 'a' towards a high wall. The driver sounds a horn of frequency 'n'. If V is the velocity of sound in air, frequency of reflected sound heard by the driver is

A bus is moving with a velocity of 5 ms^(-1) towards a huge wall. The driver sound a horn of frequency 165 Hz. If the speed of sound in air is 335 ms^(-1) , the number of beats heard per second by a passenger inside the bus will be

A car is moving with a constant velocity 10 m//s towards the stationary wall. The car blows a horn of frequency 320 Hz . The velocity of sound in air is 330 m//s . The beats frequency received by the observer is

A car travelling with speed V/50 towards a hill, (where v is speed of sound in air), sounds a horn of frequency 196 Hz. The number of beats heard per second by the driver when reflected sound reaches the driver is

A car is approching a railway crossing at a speed of 72 kmph . It sounds a horn, when it is 800 m away, at 600 Hz . If the velocity of sound in air is 330 ms^(-1) . The apparent frequency as received by a man at rest near the railway track perpendicular to the road at a distance of 600 m from the crossing the

Velocity of sound in air is 332 ms^-1 . Its velocity in vacuum will be

a bus is moving with a velocity 4 m/s towards a wall, the driver sounds a horn of frequency 173 Hz . if the speed of sound in air is 350 m/s. the number of beat heard per second by a passanger on the bus will be

A locomotive approaching a crossing at a speed of 20 ms^(-1) sounds a whistle of frequency 640 Hz when 1 km from the crossing. There is no wind and the speed of sound in air is 330 ms^(-1) . What frequency is heard by an observer sqrt(3) km on the straight road from the crossing at right angle :-

A sound source emitting sound of frequency 450 Hz is approaching a stationary observer with velocity 30 ms^(-1) and another identical source is going away from the observer with the same velocity. If the velocity of sound is 330 ms^(-1) , then the difference of frequencies heard by observer is

AAKASH INSTITUTE ENGLISH-WAVES-ASSIGNMENT ( SECTION-C ( Previous year Questions ))
  1. A tuning fork of frequency 512 Hz marks 4 beat/s with the vibration s...

    Text Solution

    |

  2. Each of the two strings of length 51.6 cm and 49.1 cm are tensioned se...

    Text Solution

    |

  3. The driver of a car treavelling with speed 30 ms ^(-1) toward a hill ...

    Text Solution

    |

  4. A wave in a string has an amoplitude of 2cm. The wave travels in the p...

    Text Solution

    |

  5. The wave described by y = 0.25 sin ( 10 pix -2pi t ) where x and y are...

    Text Solution

    |

  6. Two points are located at a distance of 10 m and 15 m from the source ...

    Text Solution

    |

  7. Two sound waves with wavelengths 5.0 m and 5.5 m respectively, each pr...

    Text Solution

    |

  8. A transerse wave propagating along x-axis is represented by y(xx ,t)...

    Text Solution

    |

  9. The of reverberation of a room A is 1s. What will be the time (in seco...

    Text Solution

    |

  10. Which one of the following statements is true ?

    Text Solution

    |

  11. A point source emits sound equallt in all direction in a non -absoring...

    Text Solution

    |

  12. Two vibrating tunign forks produce progessive waves given by y(1)=4 ...

    Text Solution

    |

  13. Two waves are represented by the equations y(1)=asin(omegat+kx+0.57)...

    Text Solution

    |

  14. A hospital uses an ultrasonic scanner to locate tumours in a tissue. W...

    Text Solution

    |

  15. Two sound waves having a phase difference of 60^(@) have path differe...

    Text Solution

    |

  16. A transverse wave is represented by the equation y=y0sin.(2pi)/(lamd...

    Text Solution

    |

  17. A wave travelling in positive X-direction with A = 0.2 m velocity = 36...

    Text Solution

    |

  18. The phase difference between two waves represented by y(1)=10 ^(...

    Text Solution

    |

  19. A wave of frequency 100 Hz is sent along a string towards a fixed end....

    Text Solution

    |

  20. A standing wave having 3 node and 2 antinode is formed between two ato...

    Text Solution

    |