Home
Class 12
PHYSICS
A lead bullet strikes a target with velo...

A lead bullet strikes a target with velocity of 480 m/s. if the bullet falls dead, then the rise in temperature of bullet is, (Assuming that heat produced is equally shared between the bullet and target).
`(J=4.2xx10^(3)J//kcal,C=0.03kcal//kgK`)

A

`557^(@)C`

B

`457^(@)C`

C

`857^(@)C`

D

`754^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
B
`mcDeltaT=(((1)/(2)mv^(2)))/(2J)`
`therefore DeltaT=(1)/(4)(v^(2))/(Jc)=(1)/(4)(480xx480)/(4.2xx0.03xx10^(3))=457^(@)C`
Promotional Banner

Topper's Solved these Questions

  • KINETIC THEORY OF GASES & RADIATION

    NIKITA PUBLICATION|Exercise MCQs (Degrees of freedom and law of equipartition of energy & Application of specific hest capacities of gases)|87 Videos

  • KINETIC THEORY OF GASES & RADIATION

    NIKITA PUBLICATION|Exercise MCQs (Thermodynamics)|56 Videos

  • KINETIC THEORY OF GASES & RADIATION

    NIKITA PUBLICATION|Exercise MCQs (Mean Free Path)|8 Videos

  • INTERFERENCE AND DIFFRACTION

    NIKITA PUBLICATION|Exercise MULTPLE CHOICE QUESTIONS|333 Videos

  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    NIKITA PUBLICATION|Exercise MCQs (Sensitivity and accuracy of M.C.G.)|1 Videos

Similar Questions

Explore conceptually related problems

A lead bullet strikes a target with a velocity of 500 ms^(-1) and the bullet falls dead. Calculate the rise in temperature of the bullet assuming that 40% of the heat produced is used in heating the bullet. Given specific heat of lead = 0.03 cal g^(-1).^(@)C^(-1), J = 4.2 J cal^(-1) .

A lead bullet strikes against a steel plate with a velocity 200ms^-1 . If the impact is perfectly inelastic and the heat produced is equally shared between the bullet and the target, thent he rise in temperature of the bullet is (specific heat capacity of lead =125Jkg^-1K^-1 )

A bullet of mass 20xx10^(-3)kg enters into a fixed block of wood with a velocity of 100ms^(-1) and is brought to rest in the wood. Calclate the rise in temperature of te bullet if two -third of the heat produced is absorbed by the bullet. (Specific heat capacity of lead =32calkg^(-1)K^-1) and J=4.2J//"callorie" )

A lead bullet weighing 20 g and moving with a velocity of 100 ms^(-1) comes to rest in a fixed block of wood. Calculate the heat developed and the rise in temperature of the bullet assuming that the half of the heat is absorbed by the bulley. The specific heat of lead is 0.03 cal g^(-1).^(@)C^(-1) .

A bullet of mass 20gram strikes a target with a velocity of 100m // s and is brougth to rest after piercing 20cm into it. What is the average force of resistance offered by the target?

With what velocity must a lead bullet at 50^(@)C strike against an obstacle in order that the heat produced by the arrest of the motion, is sufficient of melt it, assuming that all the heat produced remains within the bullet? (Specific heat capacity of lead =31cal kg^(-1)K^(-1) , melting point of lead =335^(@)C , specific latent heat capacity of lead =5370 cal kg^(-1)K^(-1) and J=4.2 joules cal^(-1) )

A bullet of mass 5gm is moving with speed 400m//s . Strike a targent and energy. Then calculate rise of temperature of bullet. Assuming all the lose in kinetic energy is converted into heat energy of bullet if is specific heat is 500 J//kg^(@)C .

NIKITA PUBLICATION-KINETIC THEORY OF GASES & RADIATION -MCQs (Presure exerted by the gas molecule and kinetic energy)
  1. The kinetic energy per kg of nitrogen molecules at 175^(@)C is (Molecu...

    Text Solution

    |

  2. If the temperature of a gas is increased from 0^(@)C to 273^(@)C, then...

    Text Solution

    |

  3. A jar has a mixture of hydrogen and oxygen in the ratio 4:5. then the ...

    Text Solution

    |

  4. If the temperature of a gas is increased from 0^(@) to 273^(@)C, then ...

    Text Solution

    |

  5. Mean kinetic energy per gram mole of an ideal gas at 0^(@)C is nearly ...

    Text Solution

    |

  6. If one gm mole of nitrogen gas occupies 2xx10^(4) c.c. at a pressure o...

    Text Solution

    |

  7. If the mean kinetic energy of the molecules of a gas is (1/3)^(rd) of ...

    Text Solution

    |

  8. Two gases at absolute temperatures 300 K and 350 K respectively. Rat...

    Text Solution

    |

  9. If the average kinetic energy of gas molecule at 27^(@)C is 6.21xx10^(...

    Text Solution

    |

  10. The average kinetic energy of the molecules of hydrogen is E. if the m...

    Text Solution

    |

  11. When two gases having volumes 1 litres and 2 liters are at the same te...

    Text Solution

    |

  12. Total random kinetic energy of the molecules in 1 mole of a gas at a t...

    Text Solution

    |

  13. Temperature of gas is a measure of

    Text Solution

    |

  14. What is the K.E. of translational motion of molecules in 15 gram of am...

    Text Solution

    |

  15. A lead bullet strikes a target with velocity of 480 m/s. if the bullet...

    Text Solution

    |

  16. Water falls from a height 500m, what is the rise in temperature of wat...

    Text Solution

    |

  17. An ice block at 0^(@)C falls from rest at certain height. If 0.1% of i...

    Text Solution

    |

  18. A bullet of mass 4.2 gm is moving at certain velocity. If all its kine...

    Text Solution

    |

  19. The density of oxygen at N.T.P. is 16xx0.089kg//m^(3) then the R.M.S. ...

    Text Solution

    |

  20. Gas at a pressure P(0) in contained as a vessel. If the masses of all ...

    Text Solution

    |