NEET Practice Questions (MCQs) with Answers & Solutions

A light ray enters through a right angled prism at point P with the angle of incidence $30^\circ$ as shown in figure. It travels through the prism parallel to its base $BC$ and emerges along the face $AC$. The refractive index of the prism is:

A particle moving with uniform speed in a circular path maintains:

The graph which shows the variation of $\left(\dfrac{1}{\lambda^2}\right)$ and its kinetic energy, $E$ is (where $\lambda$ is de Broglie wavelength of a free particle):

A wire of length '$l$' and resistance $100\ \Omega$ is divided into 10 equal parts. The first 5 parts are connected in series while the next 5 parts are connected in parallel. The two combinations are again connected in series. The resistance of this final combination is:

The moment of inertia of a thin rod about an axis passing through its mid point and perpendicular to the rod is $2400\ \text{g cm}^2$. The length of the 400 g rod is nearly:

The output ($Y$) of the given logic gate is similar to the output of an/a:

In a vernier calipers, $(N + 1)$ divisions of vernier scale coincide with $N$ divisions of main scale. If 1 MSD represents 0.1 mm, the vernier constant (in cm) is:

At any instant of time $t$, the displacement of any particle is given by $2t - 1$ (SI unit) under the influence of force of $5N$. The value of instantaneous power is (in SI unit):

A thin spherical shell is charged by some source. The potential difference between the two points $C$ and $P$ (in $V$) shown in the figure is:

(Take $\dfrac{1}{4\pi\epsilon_0} = 9\times 10^9$ SI units)

A thin flat circular disc of radius 4.5 cm is placed gently over the surface of water. If surface tension of water is $0.07\ \text{Nm}^{-1}$, then the excess force required to take it away from the surface is: