Home
Class 11
PHYSICS
A particle of charge per unit mass alpha...

A particle of charge per unit mass `alpha` is released from the origin with velocity `v=v_(0)hati` in the magnetic field `vecB=-B_(0)hatk` for A cup of tea cools from `80^(@)C" to "60^(@)C` in 40 seconds. The ambient temperature is `30^(@)C`. In cooling from `60^(@)C" to "50^(@)C`, it will take time: `x le (sqrt3)/(2)(v_(0))/(B_(0)alpha) and vecB=0" for "x gt (sqrt3)/(2)(v_(0))/(B_(0)alpha)`
The x - coordinate of the particle at time `t(gt(pi)/(3B_(0)alpha))` would be

A

`-(2V_(0))/(B_(0)alpha)`

B

`-(V_(0))/(B_(0)alpha)`

C

`(2V_(0))/(B_(0)alpha)`

D

`-(V_(0))/(B_(0)alpha)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MAGNETIC EFFECT OF CURRENT AND MAGNETISM

    DC PANDEY ENGLISH|Exercise More than One Option is Correct|25 Videos

  • MAGNETIC EFFECT OF CURRENT AND MAGNETISM

    DC PANDEY ENGLISH|Exercise Comprehension type Questions|16 Videos

  • MAGNETIC EFFECT OF CURRENT AND MAGNETISM

    DC PANDEY ENGLISH|Exercise Integer type Questions|10 Videos

  • LAWS OF THERMODYNAMICS

    DC PANDEY ENGLISH|Exercise Level 2 Subjective|18 Videos

  • MEASUREMENT AND ERRORS

    DC PANDEY ENGLISH|Exercise Subjective|19 Videos

Similar Questions

Explore conceptually related problems

A particle of charge per unit mass alpha is released from origin with a velocity vecv=v_(0)hati uniform magnetic field vecB=-B_(0)hatk . If the particle passes through (0,y,0) , then y is equal to

Choose the correct option: A particle of charge per unit mass alpha is released from origin with a velocity vecv=v_(0)hati in a magnetic field vec(B)=-B_(0)hatk for xle(sqrt(3))/2 (v_(0))/(B_(0)alpha) and vec(B)=0 for xgt(sqrt(3))/2 (v_(0))/(B_(0)alpha) The x -coordinate of the particle at time t((pi)/(3B_(0)alpha)) would be

A particle of specific charge alpha is projected from origin with velocity v=v_0hati-v_0hatk in a uniform magnetic field B=-B_0hatk . Find time dependence of velocity and position of the particle.

A charged particle (q.m) released from origin with velocity v=v_(0)hati in a uniform magnetic field B=(B_(0))/(2)hati+(sqrt3B_(0))/(2)hatJ . Maximum z-coordinate of the particle is

A charge praticule of sepeific charge (charge/ mass ) alpha is realsed from origin at time t=0 with velocity v= v_(0)(hati+hatj) in unifrom magnetic fields B= B_(0)hati . Co-ordinaties of the particle at time t = (pi)/(B_(0)alpha) are

An electron is moving with an initial velocity vecv=v_(0)hati and is in a magnetic field vecB=B_(0)hatj . Then it's de-Broglie wavelength

An electron is moving with an initial velocity vecv=v_(0)hati and is in a magnetic field vecB=B_(0)hatj . Then it's de-Broglie wavelength

A charged particle (q.m) released from origin with velocity v=v_(0)hati in a uniform magnetic field B=(B_(0))/(2)hati+(sqrt3B_(0))/(2)hatJ . Z-component of velocity is (sqrt3v_(0))/(2) after in t=……….

A charged particle (q.m) released from origin with velocity v=v_(0)hati in a uniform magnetic field B=(B_(0))/(2)hati+(sqrt3B_(0))/(2)hatJ . Pitch of the helical path described by the particle is

A particle of charge q and mass m is projected from the origin with velocity v=v_0 hati in a non uniformj magnetic fiedl B=-B_0xhatk . Here v_0 and B_0 are positive constants of proper dimensions. Find the maximum positive x coordinate of the particle during its motion.

DC PANDEY ENGLISH-MAGNETIC EFFECT OF CURRENT AND MAGNETISM-Only One Option is Correct
  1. A conducting rod of mass m and length l is placed over a smooth horizo...

    Text Solution

    |

  2. Choose the correct option: A particle of charge per unit mass alpha i...

    Text Solution

    |

  3. A particle of charge per unit mass alpha is released from the origin w...

    Text Solution

    |

  4. Two wires AO and OC carry equal currents i as shown in Fig. One end of...

    Text Solution

    |

  5. Choose the correct option: Figure shows a square current carrying lo...

    Text Solution

    |

  6. A conducting ring of mass 2kg and radius 0.5m is placed on a smooth pl...

    Text Solution

    |

  7. A charge praticule of sepeific charge (charge/ mass ) alpha is rea...

    Text Solution

    |

  8. Magnetic moment of an electron in nth orbit of hydrogen atom is

    Text Solution

    |

  9. Two very long straight parallel wires carry steady currents i and 2i i...

    Text Solution

    |

  10. In Fig. a coil of single turn is wound on a sphere of radius r and mas...

    Text Solution

    |

  11. A particule having charge q enters a rection of untiormal magnetic...

    Text Solution

    |

  12. A particle of specific charge (charge/mass) alpha starts moving from t...

    Text Solution

    |

  13. A conducting wire bent in the from of a parabola y^(2)=2x carries a cu...

    Text Solution

    |

  14. A rectangular loop PQRS made from a uniform wire has length a, width b...

    Text Solution

    |

  15. A circular loop of radius R carrying a current I is placed in a unifor...

    Text Solution

    |

  16. A rectanguar doop carrying a current I is situated near a long straigh...

    Text Solution

    |

  17. Kinetic energy of a charged particle is zero at time t(0). K at time 2...

    Text Solution

    |

  18. Three infinetely long wires 1 , 2 and 3 carry equal currents in the di...

    Text Solution

    |

  19. A change q=1 C is at (3m,4m) and moving towards positive x-axis with c...

    Text Solution

    |

  20. Two identical magnetic dipoles of magnetic moments 1*0Am^2 each are pl...

    Text Solution

    |