Draw a neat diagram to show the angle of dip and angle of declination.

Define the term angle of dip and declination.

What is meant by the 'angle of incidence' and the 'angle of refraction' for a ray of light? Draw a labelled ray diagram to show the angle of incidence and the angle of refraction for a refracted ray of light.

Draw a neat and labelled diagram to show the path of a ray of light in air and glass when the ray is incident obliqely on a glass slab. Show the (i) incident ray (ii) refracted ray (iii) emergent ray (iv) angle of incidence (v ) angle of refraction (vi) angle of emergence in the diagram. OR Draw a neat and labelled diagram to show refraction of light through a glass slab.

What is declination? Draw a diagram to show the angle between the declination and true direction of geographic north.

Draw a neat diagram of Pelvic bones.

Draw a neat diagram of spinal cord.

Draw a neat diagram to show dispersion of light in a prism.

Draw a neat diagram of Chlamydomonas.

Draw a neat diagram to show the position of apchelion perihelion and foci in a planetary model.