Home
Class 12
PHYSICS
A car is moving with a constant speed of...

A car is moving with a constant speed of `60 km h^-1` on a straight road. Looking at the rear view mirror, the driver finds that the car following him is at a distance of `100 m` and is approaching with a speed of `5 km h^-1`. In order to keep track of the car in the rear, the driver begins to glane alternatively at the rear and side mirror of his car after every `2 s` till the other car overtakes. If the two cars were maintaining their speeds, which of the following statement (s) is/are correct ?

A

The speed of the car in the rear is `65 km h^(-1)`

B

In the side mirror, the car in the rear would appear to approach with a speed of `5 km h^(-1)` to the driver of the leading car

C

In the rear view mirror, the speed of the approaching car would appear to decrease as the distance between the cars decreases

D

In the side mirror, the speed of the approaching car would appear to increase as the distance between the cars decreases

Text Solution

Verified by Experts

The correct Answer is:
D

As is known, in the side mirror, the speed of approa-ching car would appear to increase as the distance between the cars decreases. Choice (d) is correct.
Promotional Banner

Topper's Solved these Questions

  • OPTICS

    PRADEEP|Exercise Problems for practice|4 Videos
  • OPTICS

    PRADEEP|Exercise Comprehension 1|1 Videos
  • OPTICS

    PRADEEP|Exercise Value based questions|3 Videos
  • MAGNETIC EFFECT OF CURRENT AND MAGNETISM

    PRADEEP|Exercise Competition Focus (Multiple Choice Questions)|2 Videos

Similar Questions

Explore conceptually related problems

The rear - view mirror of a car is

The rear view mirrors used in vehicles are _____.

A car covers 300 km in 15 h. Find the speed of the car.

A car moves with a speed of 60 km h^(-1) for 20 min and then at a speed of 30 km h^(-1) for the next 20 min. the total distance covered by the car is ____ km.

In rear wheel drive cars the engine rotastes the rear whel and the front wheels rotates only becomes the car moves. Ilf such a car accelerates on horizontal road the friction

A car is moving on a straight road covers one third of the distance with a speed of 20 km/h and the rest with a speed of 60 km/h. The average speed of the car is

Snow is falling vertically at a constant speed of 8.0 m/s. At what angle from the vertical do the snowflakes appear to be falling as viewed by the driver of a car traveling on a straight, level road with a speed of 50 km/h?

PRADEEP-OPTICS-Exercise
  1. The direction of ray of light incident on a concave mirror is shown by...

    Text Solution

    |

  2. The optical density of turpentine is higher than that of water, while ...

    Text Solution

    |

  3. A car is moving with a constant speed of 60 km h^-1 on a straight road...

    Text Solution

    |

  4. There are certain materials developed in laboratories which have a neg...

    Text Solution

    |

  5. Consider an extended object immersed in water contained in a plane thr...

    Text Solution

    |

  6. A rectangular block of glass ABCD has a refractive index 1.6. A pin is...

    Text Solution

    |

  7. Between the primary and secondary rainbows, there is a dark band known...

    Text Solution

    |

  8. A magnifying glass is used, as the object to be viewed can be brought ...

    Text Solution

    |

  9. An astronomical refractive telescope has an objective of focal length ...

    Text Solution

    |

  10. Consider a light beam incident from air to a glass slab at Brewster's ...

    Text Solution

    |

  11. Consider sunlight incident on a slit of width 10^(4) Å . The image see...

    Text Solution

    |

  12. Consider a ray of light incident from air onto a slab of glass (refrac...

    Text Solution

    |

  13. In a Young's double slit experiment, the source is white light. One of...

    Text Solution

    |

  14. Figure shows a standard two slit arrangement with slits S(1), S(2). P(...

    Text Solution

    |

  15. Two source S(1) and S(2) of intensity I(1) and I(2) are placed in fron...

    Text Solution

    |

  16. Consider sunlight incident on a pinhole of width 10^(3)Å. The image of...

    Text Solution

    |

  17. Consider the diffraction pattern for a small pinhole. As the size of t...

    Text Solution

    |

  18. For light diverging from a point source

    Text Solution

    |

  19. A source of light lies on the angle bisector of two plane mirrors incl...

    Text Solution

    |

  20. A ray of light travelling in the direction (1)/(2)(hat(i)+sqrt(3)hat(j...

    Text Solution

    |