The blue colour of sky is due to?
CMAT Physics Questions
CMAT Physics Questions
The blue colour of the sky is due to the scattering of light by gas molecules and particles in the atmosphere. Sunlight contains all colours, but the shorter, blue wavelengths are scattered more effectively in all directions than longer wavelengths like red, which is why the sky appears blue to us.
Match List I with List II :

Choose the correct answer from the options given below :
A) Electrical Energy into mechanical energy -> (III) Electric motor
The electric motor is a device that converts Electrical Energy into mechanical energy. It uses the force produced by an electric current in a magnetic field to cause rotation, which performs mechanical work.
(B) Electrical Energy into Light energy -> (II) Tube light
A tube light (fluorescent lamp) converts Electrical Energy into Light energy (and heat). Electric current excites the gas inside the tube, causing it to emit UV light, which then excites the phosphorus coating to produce visible light.
(C) Mechanical Energy into Electrical Energy -> (I) Dynamo
A dynamo (a type of electric generator) converts Mechanical Energy into Electrical Energy. It works on the principle of electromagnetic induction, where a rotating coil in a magnetic field generates an electric current.
(D) Solar energy into electrical energy -> (IV) Solar cell
A solar cell (photovoltaic cell) converts Solar energy (light energy) into electrical energy. It uses the photovoltaic effect, where light shining on certain materials creates an electric current.