Home
Class 12
PHYSICS
A particle is projected from a point A w...

A particle is projected from a point A with velocity `usqrt2` at an angle of `45^(@)` with horizontal as shown in the figure. It strikes the plane BC at right angles. The velocity of the particle at the time of collision is

A

`(sqrt3u)/2`

B

`u/2`

C

`(2u)/sqrt3`

D

None

Text Solution

Verified by Experts

The correct Answer is:
3
Let v be the velocity at the time of collision.
Then, `usqrt2cos45^(@)=vsin60^(@)`

`(usqrt2)(1/sqrt2)=(sqrt3v)/2`
`therefore v=2/sqrt3u`
Promotional Banner

Topper's Solved these Questions

  • MOCK TEST 3

    CAREER POINT|Exercise CHEMISTRY|30 Videos

  • MOCK TEST 2

    CAREER POINT|Exercise PART (B)-CHEMISTRY|29 Videos

  • MOCK TEST 4

    CAREER POINT|Exercise CHEMISTRY|30 Videos

Similar Questions

Explore conceptually related problems

A particle is projected from a point A with velocity sqrt(2)u an angle of 45^(@) with horizontal as shown in figure. It strikes the plane BC at right angles. The velocity of the particle at the time of collision is

A particle is projected from a point P with a velocity v at an angle theta with horizontal. At a certain point Q it moves at right angles to its initial direction. Then

A ball is projected from the point O with velocity 20 m//s at an angle of 60^(@) with horizontal as shown in figure. At highest point of its trajectory it strikes a smooth plane of inclination 30^(@) at point A. The collision is perfectly inelastic. The maximum height from the ground attained by the ball is (g=10 m//s^(2))

Two particle are projected with same initial velocities at an angle 30^(@) and 60^(@) with the horizontal .Then

A particle is projected from a point O with a velocity u at an angle alpha (upwards) to the horizontal. At a certain point P it moves at right angles to its initial direction. It follows that:

A particle is project d from point A with velocity u at an angle alpha with horizontal. In its parabolic path, at point P the particle is moving at right angles to its initial direction of projection. Its velocity at P is:

CAREER POINT-MOCK TEST 3-CHEMISTRY
  1. A particle is projected from a point A with velocity usqrt2 at an angl...

    Text Solution

    |

  2. The hybridization states of the nitrogen atom in pyridine, piperdine a...

    Text Solution

    |

  3. A sample of Ammonium phosphate (NH(4))(3)PO(4) contains 3.18 moles of ...

    Text Solution

    |

  4. Which of the folowing staements is not correct?

    Text Solution

    |

  5. Polarisation is the distortion of the shape of the shape of an anion b...

    Text Solution

    |

  6. The de-Brogile wavelength of a neutron at 927^(@)C is lamda. What will...

    Text Solution

    |

  7. In a closed flask of 5 litre, 1.0 g of H(2) is heated from 300-600K. W...

    Text Solution

    |

  8. Assume that the decomposition of HNO(3) can be represented by the foll...

    Text Solution

    |

  9. Which of the following is a buffer solution ?

    Text Solution

    |

  10. A gaseous system undergo a change of state from (1) to (2) by any of t...

    Text Solution

    |

  11. The empty space between the shaded baals and holow balls and hollow ba...

    Text Solution

    |

  12. What will be the temperature at which a solution containing 6 g of glu...

    Text Solution

    |

  13. In a Cu-voltameter, mass deposited in 30 s is m gm. If the time-curren...

    Text Solution

    |

  14. Plotting a graph of log t(1//2) against log [A](0) of a rectant for a ...

    Text Solution

    |

  15. The rate of disappearence of SO(2) in the reaction 2SO(2)+O(2)to2SO(...

    Text Solution

    |

  16. Which of the following compound have 1^(@),2^(@), 3^(@) and 4^(@)C pre...

    Text Solution

    |

  17. Relate the following compounds

    Text Solution

    |

  18. Which has maximum b,p and m,p out of :

    Text Solution

    |

  19. Action of heat on a mixture of sodium propionate and sodalime produces...

    Text Solution

    |

  20. In which case racemisation takes place ?

    Text Solution

    |

  21. Which of the following molecule do not give Br(2)/Water test

    Text Solution

    |