Which of the following is not a method of calculating National Income?
The 3 methods used for calculating the national income are : ● Income method ● Output method or Product method ● Expenditure method
Which of the following phenomena establishes the transverse nature of light waves?
Sensitivity of the human eye is maximum in the –
Light from a point source in air falls on a spherical glass surface (n=1.5 c and radius of curvature = 10 cm). The distance of the light source from the...
A potentiometer is an accurate and versatile device to make electrical measurements of E.M.F. because the method involves:
A stone of mass 0.3 kg tied to the end of a string is whirled round in a circle of radius 1.2 m with a speed of 20 rev./ mim in a horizontal plane. Wha...
The oldest type of energy known to man is –
In order to use the transistor as an amplifier, it has to operate in the____ region
The group velocity of matter waves associated with a moving particle is:
Which of the following is the best conductor of electricity?