Home
Class 11
PHYSICS
A steel scale gives correct reading at t...

A steel scale gives correct reading at `t_1^@C`. When temperature changes to `t_2^@C` then

A

if`t_2 gt t_1` reading is greater than true value.

B

if`t_2 gtt_1`, trending is lesser than true-value

C

the reading is always equal to true value.

D

the reading is always less than true value.

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Sound

    TARGET PUBLICATION|Exercise Exercise|248 Videos

Similar Questions

Explore conceptually related problems

If the pressure of a gas at constant volume changes from 2 atm to 1 atm. The temperature changes from 0^@C

A steel wire 2 mm in diameter is just stretched between two fixed points at a temperature of 20^(@)C. If the temperature falls to 10^(@)C, then the tension in the wire is (The coefficient of linear expansion of steel = 11xx10^(-6)//^(@)C and Y for steel 2.1 xx10^(11)N//m^(2))

A steel tyre is 100 cm in diameter at 25^@C . To what temperature must it be heated so that it will just slip on a cartwheel 100.3 cm in diameter? (alpha_(steel)=1.2 xx 10^-5//^@C )

Calculate the activation energy of a reaction for which rate constant becomes four times when temperature changes from 30^@C to 50^@C . Given : R=8.314 Jk^(-1) mol^(-1) .

Railway tracks are laid with gaps for expansion. The gap between the steel rails 20 m long is 1.2 cm at 10^@C . The temperature at which the steel rails just touch each other is ( prop steel = 12 xx 10^-6//^@C)

A metal sphere cools at the rate of 1.6^@ C /min when its temperature is 70^@ C . At what rate will it cool when its temperature is 40^@ C. The temperature of surroundings is 30^@ C.

A metal sphere cools at the rate of 1.6^@C//min when itstemperature is 60^@C . At what rate will it cool when its temperature is 50^@C ? The temperature of surroundings is 30^@C .

A metal sphere cools at the rate of 0.05^@ C/s when its temperature is 70^@ C and at the rate of 0.025^@ C /s when its temperature is 50^@ C . Determine the temperature of the surroundings and find the rate of cooling when the temperature of the metal sphere is 40^@C .

The temperature inside a refrigerator is t_2 °C and the room temperature is t_1 °C. The amount of heat delivered to the room for each joule of electrical energy consumed ideally will be

Two rods, one of aluminum and the other made of steel, having initial length l_1 and l_2 are connected together to form a single rod of length l_1 + l_2 . The coefficients of linear expansion for aluminum and steel are alpha_a, and alpha_s, respectively. If the length of each rod increases by the same amount when their temperature are raised by t^@C , then find the ratio l_1/(l_1 + l_2)

TARGET PUBLICATION-Thermal Properties of Matter-Exercise
  1. A closed bottle containing water at 30^@C is carried to the moon in a ...

    Text Solution

    |

  2. Two iron bars of same length with unequal radii are heated for the sam...

    Text Solution

    |

  3. A steel scale gives correct reading at t1^@C. When temperature changes...

    Text Solution

    |

  4. When a bimetallic strip is heated, it

    Text Solution

    |

  5. A metal rod having a coefficient of linear expansion of 2 xx 10^-5 /^@...

    Text Solution

    |

  6. An iron plate has a circular hole of a diameter 10 cm. Find the diamet...

    Text Solution

    |

  7. A metal sphere 10.01 cm in diameter is placed on a brass ring of inter...

    Text Solution

    |

  8. The metal sheet shown in figure, with two holes cut of unequal diamete...

    Text Solution

    |

  9. A disc has an area of 0.32 m^2 at 20^@C, what will be its area at 100...

    Text Solution

    |

  10. A solid ball of metal has a spherical cavity inside it. If the ball is...

    Text Solution

    |

  11. If same amount of heat is supplied to two identical spheres (one is ho...

    Text Solution

    |

  12. Which of the following relation is INCORRECT?

    Text Solution

    |

  13. A cylindrical metal rod of length L0 is shaped into a ring with a smal...

    Text Solution

    |

  14. When a copper is heated, the largest percentage increase will occur in...

    Text Solution

    |

  15. A glass flask of volume one liter at 0^@C is filled, level full of mer...

    Text Solution

    |

  16. A beaker is completely filled with water at 4^@C. It will overflow

    Text Solution

    |

  17. A brass disc fits simply in a hole of a steel plate. The disc from the...

    Text Solution

    |

  18. Two rods, one of aluminum and the other made of steel, having initial ...

    Text Solution

    |

  19. An iron tyre is to be fitted onto a wooden wheel 1 m in diameter. The ...

    Text Solution

    |

  20. A two litre glass flask contains some mercury. It is found that at all...

    Text Solution

    |