Why is the copper tube of a solar water heater painted black from outside?

Academic Physics NCERT Class 10

The copper tube of a solar water heater is painted black from outside so that it can collect the sun's heat as much as possible because the black colour or surface is a good absorber of heat.

Tutorialspoint

Simply Easy Learning

Updated on: 10-Oct-2022

84 Views

In a solar water heater, why is the storage tank placed at a higher level than the solar panel containing coils?
(a) With the help of a labelled diagram, explain the construction and working of a solar cooker.(b) Why is the solar cooker box painted black from inside?(c) Why is the solar cooker box covered with a glass sheet?
A cube is painted black before being sliced through equally 2 times in all directions. Find the number of cubes with none of their faces painted black, with 1 of their faces painted black, with 2 of their faces painted black and with 3 of their faces painted black.
Types of Electric Water Heater (Plate Heater, Immersion Water Heater, Geyser)
Solar energy can be directly converted to electrical energy by which of the following devices?(a) solar cooker (b) solar heater (c) solar cell (d) solar geyser
A mug full of water appears light as long as it is under water in the bucket than when it is outside water. Why ?
When a crystal of copper sulphate is placed at the bottom of a beaker containing water, the water slowly turns blue. Why?
A solar water heater cannot be used to get hot water on$(a)$ a sunny day$(b)$ a cloudy day$(c)$ a hot day$(d)$ a windy day
The difference between inside and outside surfaces of a cylindrical tube $14\ cm$ long is $88\ sq.\ cm$. If the volume of the tube is $176$ cubic cm, find the inner and outer radii of the tube.
Why copper is a less reactive metal?
Rukhsar painted the outside of the cabinet of measure 1m $\times$ 2m $\times$ 1.5m.How muchsurface area did she cover if she painted all except the bottom of the cabinet.
Why is a room heater placed near the floor and an airconditioner near the ceiling?
You might have noted that when copper powder is heated in a china dish, the reddish brown surface of copper powder becomes coated with a black substance.(a) Why has this black substance formed?(b) What is this black substance?(c) Write the chemical equation of the reaction that takes place.(d) How can the black coating on the surface be turned reddish brown?
Why formaction attribute is not working outside of tag?
Why is petroleum called black gold?

Kickstart Your Career

Get certified by completing the course

Get Started

Advertisements