Advertisements
Advertisements
प्रश्न
Why do telephone wires sag during summer?
टिप्पणी लिखिए
Advertisements
उत्तर
Telephone wires sag in summer because due to heat of the sun, the wire expands and increases in length, thus they sag in summer.
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
State three main characteristics of a thermometric substance.
Give a scientific reason for the following:
Old quits are less warm than the new ones.
What is a clinical thermometer?
What is meant by thermal insulation?
Is air a good conductor of heat?
Why are hollow bricks used in the construction of cold storage rooms?
Name a liquid which is a good conductor of heat.
Who am I?
I connect places of equal temperature.
Give reasons why –
chimneys are located high up in kitchens and factories
Which factor determines the direction of flow of heat from one body to another?
