Identify the pollutant gases largely responsible for the discoloured and lustreless nature of marble of the Taj Mahal.
For gaseous state, if most probable speed is denoated by C∗, average speed by C and mean square speed by C, then for a large number of molecules the ratios of these speeds are:
Assertion : Nitrogen and Oxygen are the main components in the atmosphere but these do not react to form oxides of nitrogen.
Reason : The reaction between nitrogen and oxygen requires high temperature.
A complex number z is said to be unimodular if . Suppose z1and z2are complex numbers such that 2−z1z2z1−2z2is unimodular and z2is not unimodular. Then the point z1lies on a :
A uniform cylinder of length L and mass M having cross-sectional area A is suspended, with its length vertical, from a fixed point by a massless spring, such that it is half submerged in a liquid of density σ at equilibrium position. The extension x0 of the spring when it is in equilibrium is: