A man standing 2 m from a charcoal fire is warmed mainly ...
A man standing 2 m from a charcoal fire is warmed mainly by?
convection
radiation
refraction
conduction
Correct answer is B
Radiation is the method of heat transfer with or without a material medium. It can be through space or through a material medium.
Plane waves through a narrow gap emerge as circular waves. This phenomenon is known as ...
Complementary colours are those which ...
Which of the following statements is not true of the isotopes of an element? They ...
Which of the following phenomena cannot be explained by the molecular theory of matter? ...