Home
Class 11
PHYSICS
A piece of lead falls from a height of 1...

A piece of lead falls from a height of 100m on a fixed non-conducting slab which brings it to rest. If the specific heat of lead is 30.6 cal/kg `.^(@)C`, the increase in temperature of the slab immediately after collision is

A

`6.72^(@)C`

B

`7.62^(@)C`

C

`5.62^(@)C`

D

`8.72^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
B
`mgh=JmSDeltathetarArrDeltatheta=(gh)/(JS)`
Promotional Banner

Topper's Solved these Questions

  • KINETIC THEORY OF GASES

    NARAYNA|Exercise LEVEL-II(C.W)|25 Videos

  • KINETIC THEORY OF GASES

    NARAYNA|Exercise LEVEL-III(C.W)|52 Videos

  • KINETIC THEORY OF GASES

    NARAYNA|Exercise C.U.Q|153 Videos

  • GRAVITATION

    NARAYNA|Exercise EXERCISE -IV|40 Videos

  • LAW OF MOTION

    NARAYNA|Exercise EXERCISE - IV|35 Videos

Similar Questions

Explore conceptually related problems

A piece of aluminium falls from a height of 200 m on a fixed non conductig slab which brings it to rest. If the specific heat of aluminium is 210 Cal//kg^(@)C . The increase in temperature of the slab immediately after collision (assume that there is no loss of heat) is

A closed card board tube is 50 cm in length an contains 200g of lead shots which occupy 2 cm of the length of the tube when it is held vertically. The tube is inverted quickly so that the end which was previously above is now below. This process is repeated 400 times. If the specific heat of lead is 0.32 cal g^(-1).^(@)C^(-1) , calculate the rise in temperature of the lead shots.

A metallic ball of mass 100 g and specific heat capacity 2 J kg^(-1)K^(-1) was dropped from a height of 6 m on to a perfectly non-conducting surface. If 80% of its kinetic energy is converted into heat on striking the surface, find the change in temperature of the ball. (Take g=1000 cm s^(-2) ).

A brass sphere of mass 0.2kg falls freely from a height of 20m and bounces to a height of 8m from the ground. If the dissipated energy in this process is absorbed by the sphere the eise in its temperature is (specific heat of brass =360 J kg^(-1)K^(-1) , g=10ms^(-2) )

At 30^(@) C, a lead bullet of 50 g, is fired verticaly upwards with a speed of 840 m/s. The specific heat of leasd is 0.02 cal/ g^(@) C. On returning to the starting level, it strikes to a cake of ice at 0^(@) C. Calcualte the amount of ice melted (Assume all the energy is spent in melting only)

A 100-g block of lead is heated from 20^@C to 50^@C . Calculate the amount of heat transferred to the block (specific heat of lead = 127 J.kg^-1.K^-1 ).

A body of mass 5 kg falls from a height of 20 metres on the ground and it rebounds to a height of 0.2 m. If the loss in potential energy is used up by the body, then what will be the temperature rise? ("specific heat of material = 0.09 cal gm"^(–1@)"C"^(–1))

A steel ball of mass 0.1 kg falls freely from a height of 10 m and bounces to a height of 5.4 m from the ground. If the dissipated energy in this process is absorbed by the ball, the rise in its temperature is (specific heat of steel =460 K//kg^(@)//C,g=10 m//s^(2) )

A lead ball at 25^@ C is dropped from a height of 2 km. It is heated due to air resistance and it is assumed that all of its kinetic energy is used in increasing the temperature of ball. Find the final temperature of the ball.

A stationary objected at 0^(@)C and weighing 3.5 kg falls from a height of 2000m on a snow mounation at 0^(@)C . If the temperature of the object just before hitting the snow is 0^(@)C and the object comes to rest immediately (g = 10 m//s^(2)) and (latent heat of ice = 3.5 xx 10^(5) "joule"//s) then the mass of ice that will melt is -

Knowledge Check

  • A piece of aluminium falls from a height of 200 m on a fixed non conductig slab which brings it to rest. If the specific heat of aluminium is 210 Cal//kg^(@)C . The increase in temperature of the slab immediately after collision (assume that there is no loss of heat) is

    A
    `2.2^(@)C`
    B
    `3.3^(@)C`
    C
    `4.4^(@)C`
    D
    `5.5^(@)C`

  • A brass sphere of mass 0.2kg falls freely from a height of 20m and bounces to a height of 8m from the ground. If the dissipated energy in this process is absorbed by the sphere the eise in its temperature is (specific heat of brass =360 J kg^(-1)K^(-1) , g=10ms^(-2) )

    A
    `0.33^(@)C`
    B
    `0.66^(@)C`
    C
    `0.77^(@)C`
    D
    `0.88^(@)C`

  • A steel ball of mass 0.1 kg falls freely from a height of 10 m and bounces to a height of 5.4 m from the ground. If the dissipated energy in this process is absorbed by the ball, the rise in its temperature is (specific heat of steel =460 K//kg^(@)//C,g=10 m//s^(2) )

    A
    `0.01^@C`
    B
    `0.1^@C`
    C
    `1^@C`
    D
    `1.1^@C`
    • NARAYNA-KINETIC THEORY OF GASES-LEVEL-I(C.W)
    1. A piece of lead falls from a height of 100m on a fixed non-conducting ...

      Text Solution

      |

    2. Hailstones fall from a certain height. If only 1% of the hailstones me...

      Text Solution

      |

    3. Two spheres A and B with masses in the ratio 2:3 and specific heat 2:3...

      Text Solution

      |

    4. Two identical balls 'A' and 'B' are moving with same velocity. If velo...

      Text Solution

      |

    5. A 50 kg man is running at a speed of 18 kmH^(-1) If all the kinetic en...

      Text Solution

      |

    6. A man of 60kg gains 1000 cal of heat by eating 5 mangoes. His efficien...

      Text Solution

      |

    7. How much work to be done in decreasing the volume of an ideal gas by a...

      Text Solution

      |

    8. Find the external work done by the system in keal, when 20 kcal of hea...

      Text Solution

      |

    9. Air expands from 5 litres to 10 literes at 2 atm pressure. External wo...

      Text Solution

      |

    10. Heat given to a system is 35 joules and work done by the system is 15 ...

      Text Solution

      |

    11. A gas is compressed at a constant pressure of 50N//m^(2) from a volume...

      Text Solution

      |

    12. Find the chagne in internal energy in joule when 10g of air is heated ...

      Text Solution

      |

    13. The temperature of 5 mol of gas which was held at constant volume was ...

      Text Solution

      |

    14. When an ideal diatomic gas is heated at constant pressure, the fractio...

      Text Solution

      |

    15. For a gas the differce between the two specific heat is 4150 J//kg K. ...

      Text Solution

      |

    16. The specific heat of air at constant pressure is 1.05kj//kg K and the ...

      Text Solution

      |

    17. The specific heat of Argon at constant volume is 0.3122 kJ/kg/K. Find ...

      Text Solution

      |

    18. If the ratio of the specific heats of steam is 1.33 and R=8312 J/k mol...

      Text Solution

      |

    19. One mole of an ideal gas undergoes an isothermal change at temperature...

      Text Solution

      |

    20. One mole of O(2) gas having a volume equal to 22.4 litres at 0^(@)C an...

      Text Solution

      |