If the screw on a screw–gauge is given six rotations, it moves by 3mm on the main scale. If there are 50 divisions on the circular scale the least count of the screw gauge is :
The solid angle subtended by the periphery of an area 1 cm2 at a point situated symmetrically at a distance of 5 cm from the area is
The SI unit of pressure gradient is
The ratio of one micron to one nanometer is
Which of the following conversions is incorrect?
The ratio of the volume of the atom to the volume of the nucleus is of the order of
1 Parsec is approximately equal to (Where AU is astronomical unit)
The order of magnitude of the diameter of the earth is
(Diameter of the earth is 1.28 × 107 m)
Astronomical unit (AU) is the distance between earth and the sun. 1 AU is equal to
If the unit of force is 100 N, unit of length is 10 m and unit of time is 100 s, what is the unit of mass in this system of units?
1 unified atomic mass unit (1 u) is equal to
The number of significant figures in the numbers 8000 × 104 and 48000.50 are respectively
A cube has a side of length 1.2×10-2 Its volume upto correct significant figures is
Which of the following rations express pressure
Which of the following quantities has the SI unit kg m2 s-3 A-2?
If the value of atmospheric pressure is 106 dyne cm-2, its value in SI units is
If momentum (p), area (A) and time (t) are taken to be fundamental quantities, then energy has the dimensional formula
Which of the following relations is dimensionally incorrect?
The mass and volume of a body are 4.237 g and 2.5 cm3, respectively. The density of the material of the body in correct significant figures is
Dimension formula for angular momentum is
Dimension of Resistance is
Dimensional formula for volume elasticity is-
