NTA JEE Main 5th September 2020 Shift 2

A body of mass $$2\,\text{kg}$$ is driven by an engine delivering a constant power of $$1\,\text{J s}^{-1}$$. The body starts from rest and moves in a straight line. After $$9\,\text{s}$$, the body has moved a distance (in m)....

A thin rod of mass $$0.9\,\text{kg}$$ and length $$1\,\text{m}$$ is suspended, at rest, from one end so that it can freely oscillate in the vertical plane. A particle of mass $$0.1\,\text{kg}$$ moving in a straight line with velocity $$80\,\text{m s}^{-1}$$ hits the rod at its bottom most point and sticks to it (see figure). The angular speed (in $$\text{rad s}^{-1}$$) of the rod immediately after the collision will be...........

Nitrogen gas is at $$300\,^\circ\text{C}$$ temperature. The temperature (in K) at which the rms speed of a $$\text{H}_2$$ molecule would be equal to the rms speed of a nitrogen molecule, is........... (Molar mass of $$\text{N}_2$$ gas 28 g).

A prism of angle $$A = 1^\circ$$, $$\mu = 1.5$$. A good estimate for the minimum angle of deviation (in degrees) is close to $$\frac{N}{10}$$. Value of N is.........

The surface of a metal is illuminated alternately with photons of energies $$E_1 = 4\,\text{eV}$$ and $$E_2 = 2.5\,\text{eV}$$ respectively. The ratio of maximum speeds of the photoelectrons emitted in the two cases is 2. The work function of the metal in (eV) is..........

The correct statement about probability density (except at infinite distance from nucleus) is:

The correct order of the ionic radii of $$\text{O}^{2-}$$, $$\text{N}^{3-}$$, $$\text{F}^-$$, $$\text{Mg}^{2+}$$, $$\text{Na}^+$$ and $$\text{Al}^{3+}$$ is:

The increasing order of boiling points of the following compounds is:

The compound that has the largest $$H-M-H$$ bond angle ($$M = N, O, S, C$$) is:

Lattice enthalpy and enthalpy of solution of NaCl are $$788\,\text{kJ mol}^{-1}$$ and $$4\,\text{kJ mol}^{-1}$$, respectively. The hydration enthalpy of $$NaCl$$ is: