State units of larger distances measured in astrononers.

State units of smaller distances measured.

State whether the following statements are true or false. Correct the false statements: Distances measured in the direction of the incident light are taken as positive.

For measuring large distances, which units are used by astronomers ? In detail.

State the SI unit of angular speed.

State the unit for pressure used in atmospheric science. How is it related to the unit pascal ?

The rate of change of velocity with distance measured from stateonary layer is called "______".

State SI unit and dimensions of impedance.

According to Cartesian sign conventions all distances are measured from the __________.

Fill in the blanks : For measuring large distances ………. Is used as a unit .

State the CGS unit of pressure. State the relation between the SI and CGS units of pressure.