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The World Bank is classifying countries in terms of per capita income. Low-income countries are those with a per capita income lower than $ 1,005. The second category is the middle-income group with a per capita income varying from $ 1,006 to $ 12,235. Countries with a PCI of $12236 and above are classified as higher-income economies. An irony about middle-income countries is that many of them are not moving up to the higher income category where the per capita income is above $12736.
The Pointing vector of electromagnetic waves has the same dimensions as that of:
The part of the eye having the largest refractive index is -
The pitch of a sound is primarily determined by which of the following?
What type of lens is used to correct myopia (nearsightedness)?
The intensity of any wave is proportional to which quantity?
In an n-type silicon, which of the following statements is true:
Which of the following phenomena establishes the transverse nature of light waves?
When the speed of car is doubled, then what will be the braking force of the car to stop it in the same distance?
In the equation of motion (2as = v² - u²), (s) represents:
Ball pen functions on the principle of :