electromagnetic spectrum questions

While all electromagnetic waves travel at the same speed (i.e., velocity 'c' is constant), the type of their radiation differs in the duration of wavelength and consequently their frequencies. An electromagnetic radiation with a long wavelength will have a low frequency and v..

Atomic Structure..

Reflection of Light..

Sun is the ultimate source of energy for organisms either directly or indirectly solar radiation before entering the atmosphere carries energy at a constant rate of 2 cal cm - 2 min - 1 , which is known as the solar constant. Solar spectrum is made up of short wave radiation, light an..

An electromagnet can be defined as a soft-iron core that is magnetised temporarily by passing a current through a coil of wire wound on the core. Principle: It is based on the magnetic effect of electric curre..

As such substances are subjected to cyclic changes the loss of magnetic properties of substance must be small. Therefore the material should attain high values of intensity of magnetisation I and magnetic field for low values of the external field which is the magnetising field. For this reason sof..

The Action Spectrum is the curve plotted on a graph paper representing the amount of oxygen evolved or the amount of carbon dioxide fixed or any other action of photosynthesis at different wavelengths of light. It has been observed that the photosynthesis occurs maximum in blue and red r..

An electromagnetic wave is a disturbance, which does not require any material medium for its propagation and can travel even through vacuum. They are caused due to varying electric and magnetic fields. Radio waves and light waves are examples for electromagnetic waves. Let us..

The process of producing electricity by magnetic field is called electromagnetic induction. Electric current can also be induced through a wire loop, by moving it near a fixed magnet. So a current is induced either by moving a magnet near the loop or by moving the loop near a magnet. It i..

Michael Faraday the English scientist was the first person to prove that a magnet can create a current To test this he moved a magnet towards and away from the coil of wire connected to a galvanometer He observed that there was a deflection in the galvanometer indicating that a current is i..