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Surface tension is responsible for the shape of liquid droplets. Although easily deformed, droplets of water tend to be pulled into a spherical shape by the cohesive forces of the surface layer. In the absence of other forces, including gravity, drops of virtually an liquids would be perfectly spherical. The spherical shape minimizes the necessary "wall tension" of the surface layer according to Laplace's law.
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 :
