What is compound eye? Make a labelled diagram of V.S. of an ommatidium of cockroach and explain in detail the mechanism of mosaic vision.

Draw the labelled diagram of V.S. of maize seed.

Draw a well labelled diagram of a V.T.S of a dorsiventral leaf.

What is a flower? Draw a neat labelled diagram showing the L.S. of a typical flower.

Draw a labelled diagram of an image formed by a compound microscope with image at least distance of distinct vision.

The threshold wavelength of tungsten is 2400 Å when tungsten is illuminated with light of wavelength 1600 Å . Find (i) work function (ii) maximum KE of emitted electron (iii) stopping potential (b) Draw a labelled diagram of an image formed by a compound microscope, with the image at least distance of distinct vision. Write any one expression for its magnifying power.

What is position of compound eyes in cockroach?

Draw a labelled ray diagram of an image formed by a compound microscope with final image formed at the least distance of distinct vision (D). Derive an expression for its magnifying power (in terms of V_(0), U_(0),f_(c) and D).

Give a well labelled diagram of the eye. Explain the phenomenon for the formation of image on retina.

What is an S_(N^1) mechanism ? Give an example of a reaction following an S_(N^1) mechanism and explain why the mechanism is considered to be S_(N^1) .