" Electromagnet "

(a) What is an electromagnet? Draw a labelled diagram to show the making of a simple electromagnet. (b) State three factors on which the strength of an electromagnet depends. How does the strength of electromagnet depend on these factors?

Wave Nature Of Electromagnetic Radiation|Characteristics Of Electromagnetic Radiations|Important Characteristics Of Wave|Relation Between Frequency, Wave Length And Velocity Of Wave|Electromagnetic Spectrum|Summary

The orderly distribution of electromagnetic radiations according to their wavelength or frequency is called electromagnetic spectrum. Identify the constituent radiation of electromagnetic spectrum which is used for studying crystal structure.

The orderly distribution of electromagnetic radiations according to their wavelength or frequency is called electromagnetic spectrum. Identify the constituent radiation of electromagnetic spectrum which produces greenhouse effect.