NTA JEE Main 20th July 2021 Shift 2

Which of the following graphs represent the behaviour of an ideal gas? Symbols have their usual meaning.

The correct relation between the degrees of freedom $$f$$ and the ratio of specific heat $$\gamma$$ is:

A particle is making simple harmonic motion along the X-axis. If at distances $$x_1$$ and $$x_2$$ from the mean position the velocities of the particle are $$v_1$$ and $$v_2$$, respectively. The time period of its oscillation is given as:

With what speed should a galaxy move outward with respect to earth so that the sodium-D line at wavelength 5890 $$\mathring{A}$$ is observed at 5896 $$\mathring{A}$$?

At an angle of 30$$^\circ$$ to the magnetic meridian, the apparent dip is 45$$^\circ$$. Find the true dip:

The magnetic susceptibility of a material of a rod is 499. Permeability in vacuum is $$4\pi \times 10^{-7}$$ Hm$$^{-1}$$. Absolute permeability of the material of the rod is:

For a series LCR circuit with $$R = 100$$ $$\Omega$$, $$L = 0.5$$ mH and $$C = 0.1$$ pF connected across 220 V - 50 Hz AC supply, the phase angle between current and supplied voltage and the nature of the circuit is:

In an electromagnetic wave, the electric field vector and magnetic field vector are given as $$\vec{E} = E_0\hat{i}$$ and $$\vec{B} = B_0\hat{k}$$, respectively. The direction of propagation of electromagnetic wave is along:

An electron having de-Broglie wavelength $$\lambda$$ is incident on a target in a X-ray tube. Cut-off wavelength of emitted X-ray is:

For a certain radioactive process, the graph between ln R and $$t$$(sec) is obtained as shown in the figure. Then the value of half life for the unknown radioactive material is approximately: