NEET 2020

177 Questions • 180 Minutes • 2020

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The phase difference between displacement and acceleration of a particle in a simple harmonic motion is :

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A long solenoid of 50 cm length having 100 turns carries a current of 2.5 A. The magnetic field at the centre of the solenoid is : ($\mu_0 = 4\pi \times 10^{-7}$ T m $A^{-1}$)

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The ratio of contributions made by the electric field and magnetic field components to the intensity of an electromagnetic wave is : (c = speed of electromagnetic waves)

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In a certain region of space with volume 0.2 $m^3$, the electric potential is found to be 5 V throughout. The magnitude of electric field in this region is :

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The average thermal energy for a mono-atomic gas is : ($k_B$ is Boltzmann constant and T, absolute temperature)

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Find the torque about the origin when a force of $3\hat{j}$ N acts on a particle whose position vector is $2\hat{k}$ m.

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The mean free path for a gas, with molecular diameter d and number density n can be expressed as :

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The energy equivalent of 0.5 g of a substance is :

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A screw gauge has least count of 0.01 mm and there are 50 divisions in its circular scale. The pitch of the screw gauge is :

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Two cylinders A and B of equal capacity are connected to each other via a stop cock. A contains an ideal gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stop cock is suddenly opened. The process is :

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A cylinder contains hydrogen gas at pressure of 249 kPa and temperature 27°C. Its density is : (R = 8.3 J $mol^{-1}$ $K^{-1}$)

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When a uranium isotope $^{235}_{92}U$ is bombarded with a neutron, it generates $^{89}_{36}Kr$, three neutrons and :

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A charged particle having drift velocity of $7.5 \times 10^{-4}$ m $s^{-1}$ in an electric field of $3 \times 10^{-10}$ V $m^{-1}$, has a mobility in $m^2$ $V^{-1}$ $s^{-1}$ of :

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Taking into account of the significant figures, what is the value of 9.99 m - 0.0099 m ?

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An iron rod of susceptibility 599 is subjected to a magnetising field of 1200 A $m^{-1}$. The permeability of the material of the rod is : ($\mu_0 = 4\pi \times 10^{-7}$ T m $A^{-1}$)

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A spherical conductor of radius 10 cm has a charge of $3.2 \times 10^{-7}$ C distributed uniformly. What is the magnitude of electric field at a point 15 cm from the centre of the sphere ? ($\frac{1}{4\pi\epsilon_0} = 9 \times 10^9$ N $m^2/C^2$)

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A series LCR circuit is connected to an ac voltage source. When L is removed from the circuit, the phase difference between current and voltage is $\frac{\pi}{3}$. If instead C is removed from the circuit, the phase difference is again $\frac{\pi}{3}$ between current and voltage. The power factor of the circuit is :

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A capillary tube of radius r is immersed in water and water rises in it to a height h. The mass of the water in the capillary is 5 g. Another capillary tube of radius 2r is immersed in water. The mass of water that will rise in this tube is :

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In Young's double slit experiment, if the separation between coherent sources is halved and the distance of the screen from the coherent sources is doubled, then the fringe width becomes :

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The capacitance of a parallel plate capacitor with air as medium is 6 μF. With the introduction of a dielectric medium, the capacitance becomes 30 μF. The permittivity of the medium is : ($\epsilon_0 = 8.85 \times 10^{-12}$ $C^2$ $N^{-1}$ $m^{-2}$)

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Paper Info

Exam: NEET
Year: 2020
Questions: 177
Duration: 180 mins

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