The distance at which the average radius of Earth's orbit subtends an angle of 1 arc second, is known as:

Which of the following is not a unit of distance?

Which one of the following devices is used to measure the intensity of earthquake?

Which one of the following physical quantities has the same dimensions as that of Planck's constant h?

The pressure exerted by a 760 mm column of mercury at 0 °C is known as

Increasing the amount of a substance does not change its–