When the heat rays from the sun area focused on a piece of black cloth by means

When the heat rays from the sun area focused on a piece of
black cloth by means of a lens, the cloth catches fire. Why ?

Question Posted / guest

When the heat rays from the sun area focused on a piece of black cloth by means of a lens, the clot..

Answer / guest

It is because the heat radiations obey the laws of refraction.

Is This Answer Correct ?

0 Yes

1 No

More General Chemistry Interview Questions

Why is ammonia solution added while preparing edta solution?

What are constituents of brass?

How is measurement of ph made?

What is si unit of viscosity-coefficient?

What is Basicity of an acid ?

What are the products formed after cod analysis?

what is the detector used in ir spectroscopy

What is buffer?

what is difference b/w "regio selectivity" & "sterio selectivity"

From which substance are the dues manufactured ?

Explain the Chemical change?

why helium does not react with other elements?

For more General Chemistry Interview Questions Click Here