Home
Class 11
PHYSICS
The lengths of the two pieces of wire ar...

The lengths of the two pieces of wire are `l_1 =(35.2 +- 0.1) cm and l_2 = (47.4 +- 0.2)` cm. what is the total length of wire with error limits ?

Text Solution

Verified by Experts

The correct Answer is:
`(82 +- 0.3) cm`
Here, `I_1 = (35.2 +- 0.1cm)`
`I_2 = (47.4 +- 0.2)cm`
`"Total length"` = I_1 + I_2 = (35.2 +47.4)cm`
=82.6cm
`"Error" =+- (0.1 + 0.2) =+-0.3cm`
`:. "Total length" = (82.6 +- 0.03)cm`
Promotional Banner

Topper's Solved these Questions

  • PHYSICAL WORLD AND MEASUREMENT

    PRADEEP|Exercise Test Your Grip|50 Videos

  • PHYSICAL WORLD AND MEASUREMENT

    PRADEEP|Exercise Fill in the blanks|50 Videos

  • PHYSICAL WORLD AND MEASUREMENT

    PRADEEP|Exercise Value Based Questions|5 Videos

  • OSCILLATIONS AND WAVES

    PRADEEP|Exercise multiple choice Questions|13 Videos

  • PROPERTIES OF BULK MATTER

    PRADEEP|Exercise Multiple choice questions|7 Videos

Similar Questions

Explore conceptually related problems

The length of two rods are recorded as l_(1) = (25.2 pm 0.1) cm and l_(2) = (16.8 pm 0.1) cm . Find their combined length .

The lengths of the sides of a rectangle are (5.7 +- 0.2)cm and (3.2 +- 0.1) cm. Calculate the perimeter of rectangular with error limits.

The length and breadth of a rectangle are ( 5.7 +- 0.1 ) cm and ( 3.4 +- 0.2 ) cm , respectively calculate the area of rectangle with error limits.

The lengths of two rods are recorded as l_(1)=25.2pm0.1cm and l_(2)=16.8pm0.1cm . Find the sum of the lengths of the two rods with the limits of error.

The lengths and breadth of a rectangle are (5.7 +- 0.1)cm and (2.4 +- 0.2) cm. Calculate area of the rectangle with error limits.

If I_1 = (12.0 +- 0.1) cm and I_2 = (8.5 +- 0.5)cm find (l_1 +l_2) and (l_1 +l_2) with proper error limits.

The original length of wire is (153.7 pm 0.6) cm . It is streched to (155.3 pm 0.2) cm. Calculate the elongation in the wire with error limits.

If l_(1) = (10.0 pm 0.1) cm and l_(2) = (9.0 pm 0.1) cm , find the their sum , difference and error in each .

The length and breadth of a rectangular lamina are measured to be (2.3 +- 0.2) cm (1.6 +- 0.1)cm. Calculate area of the lamina with error limits.

The lengths of two rods are 15.2+-0.2 cm and 10.7+-0.2 cm Find difference in lengths of the two rods with the limits of error.

PRADEEP-PHYSICAL WORLD AND MEASUREMENT-Problems for Practice
  1. Two resistance r1 = (100.0+- 0.3) ohm and r2 = (150.0+- 0.5) ohm are c...

    Text Solution

    |

  2. The diameter of a wire as measured by a screw gauge was found to be 0....

    Text Solution

    |

  3. The lengths of the two pieces of wire are l1 =(35.2 +- 0.1) cm and l2 ...

    Text Solution

    |

  4. In the above question, what is the difference in lengths of the two pi...

    Text Solution

    |

  5. The specific heats of a gas are measured as Cp = (12.28 +-0.2) units a...

    Text Solution

    |

  6. The lengths and breadth of a rectangle are (5.7 +- 0.1)cm and (2.4 +- ...

    Text Solution

    |

  7. Time taken by a body in (20 +-0.2) second in undergoing a displacement...

    Text Solution

    |

  8. The voltage across a lamp is (6.0 +- 0.1) V and the current passing th...

    Text Solution

    |

  9. If percentage error in a, b, c, d are 1% 2% 3% and 4% respectively. W...

    Text Solution

    |

  10. The specific resistance rho of a thin wire of radius r cm, resistance ...

    Text Solution

    |

  11. A potentail difference of V = (20 +-1) volt is applied across a resist...

    Text Solution

    |

  12. The radius of a sphere is measured to be (2.1+-0.5) cm. Calculate its ...

    Text Solution

    |

  13. A physical quantity x is calculated from x = ab^(2)//sqrt(c ). Calcul...

    Text Solution

    |

  14. To measure radus of curvature of a convex mirror unsing a spherometer,...

    Text Solution

    |

  15. The error in the measurement of radius of a sphere in +-4% What would ...

    Text Solution

    |

  16. The percentage error in the measurement of mass and speed of a body ar...

    Text Solution

    |

  17. The heat generated in a circuit is given by Q = I^(2) Rt , where I is ...

    Text Solution

    |

  18. State the number of significant figures in the following : (i) 0.007...

    Text Solution

    |

  19. Add 2.384xx10^(-4) to 1.7xx10^(-5) and express the result to correct n...

    Text Solution

    |

  20. Subtract 2.5xx10^4 form 3.8xx10^5 with due regard to significant figur...

    Text Solution

    |