List of top Physics Questions asked in NEET (UG)

For which one of the following, Bohr model is not valid?
A ray is incident at an angle of incidence $i$ on one surface of a small angle prism(with angle of prism A) and emerges normally from the opposite surface. If the refractive index of the material of the prism is $\mu$. then the angle of incidence is nearly equal to:
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 : $(\mu_o = 4\pi \times 10^{-7} T\,m\,A^{-1})$
Identify the function which represents a periodic motion
Assume that light of wavelength $600\, nm$ is coming from a star. The limit of resolution of telescope whose objective has a diameter of $2\,m$ is :
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?
\((\frac {1}{4\pi \epsilon_o} = 9 \times 10^9 Nm^2/C^2)\)
Light of frequency 1.5 times the threshold frequency is incident on a photosensitive material. What will be the photoelectric current if the frequency is halved and intensity is doubled?
An electron is accelerated from rest through a potential difference of V volt. If the de Broglie wavelength of the electron is $1.227 \times 10^{-2}nm$, the potential difference is :
Two coherent sources of light interfere and produce fringe pattern on a screen. For central maximum, the phase difference between the two waves will be
The energy equivalent of 0.5 g of a substance is:
The phase difference between displacement and acceleration of a particle in a simple harmonic motion is:
Two cylinders $A$ and $B$ of equal capacity are connected to each other via a stop clock. A contains an ideal gas at standard temperature and pressure. $B$ is completely evacuated. The entire system is thermally insulated. The stop clock is suddenly opened. The process is:
A cylinder contains hydrogen gas at pressure of 249 kPa and temperature $27^\circ\,C$. Its density is :$(R = 8.3\,J\,mol^{-1}K^{-1}$)
A charged particle having drift velocity of \(7.5×10^{−4} m s^{−1} \) in an electric field of  has a mobility in  \(m^2 V^{−1} s^{−1}\) of :
The quantities of heat required to raise the temperature of two solid copper spheres of radii \(r _1\) and \(r_2\)  \((r_1=1.5 r_2 )\) through \(1 K\) are in the ratio
A capillary tube of radius r is immersed in waterand 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 massof water that will rise in this tube is
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 :
The average thermal energy for a mono-atomic gasis : (kBis Boltzmann constant and T, absolute temperature)
The Brewsters angle $i_b$ for an interface should be:
The total energy of an electron in the $n^{th}$ stationary orbit of the hydrogen atom can be obtained by
When a block of mass \(M\) is suspended by a long wire of length \( L\), the length of the wire becomes \((L+l)\). The elastic potential energy stored in the extended wire is:
A soap bubble, having radius of \(1 mm\), is blown from a detergent solution having a surface tension of \(2.5 \times 10^{-2} \)\(\frac Nm\). The pressure inside the bubble equals at a point \(Z_0\) below the free surface of water in a container. Taking \(g=10 m/s^2,\) density of water-\(103 kg/m^3\), the value of \(Z_0\) is: 
The work done to raise a mass m from the surface of the earth to a height h, which is equal to the radius of the earth, is:
A hollow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r from the centre :
Ionized hydrogen atoms and a-particles with same momenta enters perpendicular to a constant magnetic field, B. The ratio of their radii of their paths \( r_H: r_\alpha\) will be: