Give Huygen.s principle with the help of a ray diagram.

Describe the internal structure of a dorsiventral leaf with the help of a labelled diagrams

Describe various types of epithelial tissues with the help of labelled diagrams.

Huygen's principle help us to find the shape of a wave front emitting from a source. draw the wave front for different source

Coherent sources are necessary for producing sustained interference. With the help of a suitable diagram, find the distance between two consecutive bright brands produced by Young's double slit.

Teacher explained crystal defects in class room. Explain with the help of diagram the important difference between Schottky and Frenkel defects?

A wavefront is defind as a surface of constant phase.Using Huygen.s Principle, prove that angle of incidence is equal to angle of reflection.

A small metal ball is suspended in a uniform electric field with the help of an insulated thread. If high energy X-ray beam fall on it