State one basic difference between real and virtual images.

Tell at least two points of differences between Real and Virtual Images.

What is the basic difference between NaCl and CsCl crystal structure ?

What is the basic difference between electric charges and magnetic poles ?

Write basic difference between isotopes and isobars with examples.

State the difference between follicular and luteal phase of menstrual cycle .

State the difference between the structural' genes in a transcription unit of prokaryotes and eukaryotes.