Match List I with List II and choose the correct answer from the codes given below the lists. 

The clouds float in the atmosphere because of the low

Rainbow is produced when sunlight falls on drops of rain.
Which of the following physical phenomena are responsible for this?
1.Diffusion
2.Total Refraction
3.Internal reflection

rocket and a jet engine differ because
A.their working principles are entirely different.
B.a rocket uses only liquid fuels whereas a jet can use solid fuels as well.
C.while a rocket carries its own oxygen supply a jet draws its air out of the atmosphere.
D.a rocket can propel vehicles into outer space whereas a jet cannot.

Which of the following are true regarding image formation with the help of mirrors?
1.A concave mirror can give a diminished virtual image.
2.A concave mirror can give a real image.
3.A convex mirror can give a virtual image.
4.A convex mirror cannot give a real image,

Consider the following natural phenomena
1.Terrestrial heating
2.Reflection of light
3.Refraction of light
4.Diffraction of light
Due to which of these phenomena is mirage formed?

Optical fibre works on the principle of

Assertion (A) : The boiling point of water decreases as the altitude increases,
Reason (R) : The atmospheric pressure increases with altitude.

Assertion (A): An iron ball floats on mercury but gets immersed in water.
Reason (R): The specific gravity of iron is more than that of mercury. 

Domestic electrical wiring is basically a