Advertisements
Advertisements
प्रश्न
A concrete slab has a length of 10 m on a winter night when the temperature is 0°C. Find the length of the slab on a summer day when the temperature is 35°C. The coefficient of linear expansion of concrete is 1.0 × 10–5 °C–1.
Advertisements
उत्तर
Given:
Length of the slab when the temperature is 0°C, L0 = 10 m
Temperature on the summer day, t = 35 °C
Let L1 be the length of the slab on a summer day when the temperature is 35°C.
The coefficient of linear expansion of concrete, α = 1 ×10–5 °C-1
\[L_1 = L_0 \left( 1 +∝t\right)\]
\[\Rightarrow L_1\] = 10 (1 + 10–5 × 35)
\[\Rightarrow L_1\] = 10 + 35 × 10–4
\[\Rightarrow L_1\] = 10.0035 m
So, the length of the slab on summer day when the temperature is 35oC is 10.0035 m.
APPEARS IN
संबंधित प्रश्न
Define emissive power and coefficient of emmision of a body.
The dimensions of emissive power are ______.
What is the temperature of the triple-point of water on an absolute scale whose unit interval size is equal to that of the Fahrenheit scale?
Can the bulb of a thermometer be made of an adiabatic wall?
Which of the following pairs may give equal numerical values of the temperature of a body?
A spinning wheel A is brought in contact with another wheel B, initially at rest. Because of the friction at contact, the second wheel also starts spinning. Which of the following energies of the wheel B increases?
(a) Kinetic
(b) Total
(c) Mechanical
(d) Internal
In a calorimeter, the heat given by the hot object is assumed to be equal to the heat taken by the cold object. Does it mean that heat of the two objects taken together remains constant?
As the temperature is increased, the time period of a pendulum
A person's skin is more severely burnt when put in contact with 1 g of steam at 100°C than when put in contact with 1 g of water at 100°C. Explain
The mechanical equivalent of heat ____________ .
Define one mole.
Explain the meaning of heat and work with suitable examples.
Heat is measured in Celsius or centigrade.
Temperature in the form of energy.
The degree of hotness and coldness of a body is called ______.
Heat given to a body that raises its temperature by 1°C is ______.
Which formula gives the average kinetic energy per molecule of an ideal gas?
What physical quantity does temperature primarily indicate?
