Home
Class 12
PHYSICS
A driver having a definite reaction time...

A driver having a definite reaction time is capable of stopping his car over a distance of 30 m on seeing a red traffic signal, when the speed of the car is 72 km/hr andover a distance of 10 m when the speed is 36 km/hr. Find the distance over which he can stop the car if it were running at a speed of 54 km/hr. Assume that his reaction time and the deceleration of the car remains same in all the three cases.

A

400 m

B

4000 m

C

400 km

D

4000 km

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • COMMUNICATION SYSTEM

    AAKASH SERIES|Exercise LECTURE SHEET (LEVEL - I) (MAIN) (EXERCISE - II) (Straight Objective & More than one Correct Answer Type Questions)|19 Videos

  • COMMUNICATION SYSTEM

    AAKASH SERIES|Exercise LECTURE SHEET (LEVEL - I) (MAIN) (EXERCISE - III) (Straight Objective & More than one Correct Answer Type Questions)|26 Videos

  • CAPACITORS

    AAKASH SERIES|Exercise PRACTICE SHEET (ADVANCED) (Integer Type Questions)|2 Videos

  • COMMUNICATION SYSTEMS

    AAKASH SERIES|Exercise PRACTICE EXERCISE (TV Antenna)|16 Videos

Similar Questions

Explore conceptually related problems

If the speed of a car is 50.4 km/h, find the distance covered in 3.6 hours.

Find the average frictional force needed to stop a a car weighing 500 kg in a distance of 25 m (the initial speed is 72 km/h.)

If a car covers a distance of 201.25 km in 3.5 hours, find the speed of the car.

The speed of a car is 72 km h^(-1) . Express it in m s^(1)

A car travels a distance of 200 km in 3 h. Find the speed of car in ms^(-1)

A car is travelling at a speed of 45 km /hr. How for will it travel in 48 mintues ?

A car can be stopped within a distance of s when its speed is v. What is the minimum distance within which the car can be stopped during the same time when its speed is nv ?

The speed of a boat in still water is 15 km / hr and the rate of current is 3 km / hr. The distance travelled downstream in 12 minutes is

A car travels a distance of 15 km in 20 minute. Find the speed of the car in kmh^(-1)

A car moves a distance of 200 m . It covers the first-half of the distance at speed 40km//h and the second-half of distance at speed v km//h . The average speed is 48km//h . Find the value of v.

AAKASH SERIES-COMMUNICATION SYSTEM -LECTURE SHEET (LEVEL - I) (MAIN) (EXERCISE - IV) (Straight Objective & More than one Correct Answer Type Questions)
  1. A driver having a definite reaction time is capable of stopping his ca...

    Text Solution

    |

  2. The highest frequency of radiowaves which when sent at some angle towa...

    Text Solution

    |

  3. Speed of electromagnetic waves is the same

    Text Solution

    |

  4. In space communication, the information can be passed from one place t...

    Text Solution

    |

  5. Which one of the following is correct ?

    Text Solution

    |

  6. The space wave propagation is utilized in

    Text Solution

    |

  7. Three waves A,B and C of frequencies 1600 KHz, 5MHz and 60 MHz, respec...

    Text Solution

    |

  8. A transmitter transmits the message in original

    Text Solution

    |

  9. A receiver reconstructs the original message after propagation through...

    Text Solution

    |

  10. A 100m long antenna is mounted on a 500m tall building. The complex ca...

    Text Solution

    |

  11. A diode detector is used to detect an amplitude modulated wave of 60% ...

    Text Solution

    |

  12. The number of telephone conversations by a fibre of band width 40MHz, ...

    Text Solution

    |

  13. Which of the following devices is full duplex?

    Text Solution

    |

  14. Which of the following devices is half duplex ?

    Text Solution

    |

  15. Which of the following statement is wrong?

    Text Solution

    |

  16. Through which mode of propagation the radio waves can be sent from one...

    Text Solution

    |

  17. The maximum peak to peak voltage of an AM wire is 24 mV and the minimu...

    Text Solution

    |

  18. In a communication system, noise is most likely to affect the signal

    Text Solution

    |

  19. The radio waves of frequency 300 MHz to 3000 MHz belong to

    Text Solution

    |

  20. Match the column I with column II.

    Text Solution

    |

  21. Match the following elements of column I with their property given in ...

    Text Solution

    |