List of top Physics Questions asked in AMUEEE

A body of mass $m$ rests on a horizontal floor with which it has a coefficient of static friction $\mu$. It is desired to make the body move by applying a minimum possible force $\vec{F}$ as shown in the diagram. The values of $\theta$ and $F_{\min }$ shall be respectively equal to
The wavelength of spectral line coming from a distant star shifts from $600\, nm$ to $600.1\, nm$. The velocity of the star relative to earth is
What is the refractive index of material of a plano convex lens, if the radius of curvature of the convex surface is $10 \,cm$ and focal length of the lens is $30 \,cm$?
For base station to mobile communication, the required frequency band is
Resultant of two vectors $\vec{A}$ and $\vec{B}$ is of magnitude $P$. If $\vec{B}$ is reversed, then resultant is of magnitude $Q$. What is the value of $P^2 + Q^2$ ?
An electron having momentum $2.4 \times 10^{-23} \,kg \,ms ^{-1}$ enters a region of uniform magnetic field of $0.15 \,T$. The field vector makes an angle of $30^{\circ}$ with the initial velocity vector of the electron. The radius of the helical path of the electron in the field shall be
For the current loops shown in the figure, Kirchhoff's loop rule for the loops $A H D C B A$ and AHDEFGA yields these equations respectively
The ratios of the distance traversed, in successive intervals of time by a body, falling from rest, are
Under the action of a given coulombic force the acceleration of an electron is $2.5 \times 10^{22}\, m \,s^{-2}$. Then the magnitude of the acceleration of a proton under the action of same force is nearly
An electron initially at rest falls a distance of $1.5\, cm$ in a uniform electric field of magnitude $2 \times 10^4\, N/C$. The time taken by the electron to fall this distance is
A slab of material of dielectric constant $K$ has the same area as the plates of a parallel plate capacitor but has a thickness $\left(\frac{3}{4}\right) d$, where $d$ is the separation of the plates. The ratio of the capacitance $C$ (in the presence of the dielectric) to the capacitance $C_{0}$ (in the absence of the dielectric) is
Which of the following graphs cannot possibly represent one dimensional motion of a particle?
A man, of mass $60\, kg$, is riding in a lift. The weight of the man, when the lift is accelerating upwards and downwards at $2\, ms ^{-2}$ are respectively (taking $g=10\, ms ^{-2}$ )
Two masses $ 8 \,kg $ and $ 12 \,kg $ are connected at the two ends of a string that goes over a frictionless pulley. Calculate the acceleration of the masses and the tension in the string. Take $ g = 10 \,m/s^2 $
Which of the following statements are incorrect ? (i) Average velocity is path length divided by time interval. (ii) In general, speed is greater than the magnitude of the velocity. (iii) A particle moving in a given direction with a non-zero velocity can have zero speed. (iv) The magnitude of average velocity is the average speed.
The potential energy of $ 4 $ -particles each of mass $ 1\,kg $ placed at the four vertices of a square of side length $ 1\,m $ is
The maximum velocity to which a proton can be accelerated in a cyclotron of $ 10\, MHz $ frequency and radius $ 50\, cm $ is
The linear momentum of an electron, initially at rest, accelerated through a potential difference of $ 100 \,V $ is
The dimensional formula for the magnetic field is
The density of copper is $ 9 \times 10^3\, kg/m^3 $ and its atomic mass is $ 63.5\, u $ . Each copper atom provides one free electron. Estimate the number of free electrons per cubic metre in copper,
The crucial function of moderators in nuclear reactors is to
The constant of proportionality $ \frac{1}{4\pi\varepsilon_{0}} $ in Coulomb?s law has the following dimensions
The center of mass of a system of three particles of masses $1\, g,\, 2\, g$ and $3\, g$ is taken as the origin of a coordinate system. The position vector of a fourth particle of mass $4\, g$ such that the center of mass of the four particle system lies at the point $(1,2,3)$ is $\alpha(\hat{ i }+2 \hat{ j }+3 \hat{ k })$, where $\alpha$ is a constant. The value of $\alpha$ is
Calculate the ratio of $ rms $ speeds of oxygen gas molecules to that of hydrogen gas molecules kept at the same temperature.
Avalanche breakdown in a $ p $ - $ n $ junction diode is due to