List of top Physics Questions asked in AMUEEE

A body of mass $0.4\, kg$ starting at origin at $t = 0$ with a speed of $10 \,m \s$ in the positive $x$-axis direction is subjected to a constant $ F = 8\, N$ towards negative $x$-axis The position of the body after $25\, s$ is

What is approximately the centripetal acceleration (in units of acceleration due to gravity on earth, $g = 10\,m/s^{-2}$) of an air-craft flying at a speed of $400\,m/s$ through a circular arc of radius $0.6\,km$ ?

When an $A C$ source of voltage $V=V_{0} \sin 100 t$ is connected across a circuit, the phase difference between the voltage $V$ and current $I$ in the circuit is observed to be $\pi / 4$, as shown in figure. If the circuit consists possibly only of $R C$ or $R L$ or $L C$ in series, find possible values of two elements.

Two trains $A$ and $B$ each of length $400 \,m$ are moving on two parallel tracks with a uniform speed $72\, km\, h^{-1}$ in the same direction with $A$ ahead of $B$. The driver of $B$ decides to overtake $A$ and accelerates by $1\, m \,s^{-2}$. If after $50\, s$, the guard of $B$ just brushes past $A$, what was the original distance between them ?

A $ 4.5 \,cm $ object is placed perpendicular to the axis of a convex mirror of focal length $ 15 \,cm $ at a distance of $ 12\, cm $ . The size of the image is

A particle is thrown vertically up with an initial velocity 9 m/s from the surface of Earth ($take\, g \,= \,10 \,m/s^2$).The time taken by the particle to reach a height of $4\, m$ from the surface second time (in seconds) is

Consider a soap film on a rectangular frame of wire of area $4 \times 4\, cm ^{2}$. If the area of the soap film is increased to $4 \times 5 \,cm ^{2}$, the work done in the process will be (The surface tension of the soap film is $3 \times 10^{-2} \,N / m .$ )

In the following equation, x, t and F represent respectively, displacement, time and force : $F = a+bt + \frac{1}{c+dx} + A \,sin \left(\omega t + \phi\right).$ The dimensional formula for $A?d$ is

If a graph is plotted between $T^2$ and $r^3$ for a planet, then its slope will be (where $M_S$ is the mass of the sun)

A closely wound solenoid $80 \,cm$ long has $5$ layers of winding of $400$ turns each. The diameter of the solenoid is $1.8\, cm$. If the current carried is $8.0\, A$, the magnitude of $B$ inside the solenoid near its centre will be

A $1.0\, m$ long metallic rod is rotated with an angular frequency of $400 \,rad /s$ about an axis normal to the rod passing through its one end. A constant and uniform magnetic field of $0.5\, T$ parallel to the axis exists everywhere. The emf developed across the ends of the rod is

Two wires $A$ and $B$ of equal masses and of the same metal are taken. The diameter of the wire $A$ is half the diameter of the wire $B$. If the resistance of wire $A$ be $24\, \Omega $ , the resistance of $B$ will be

A person measures the time period of a simple pendulum inside a stationary lift and finds it to be $T$. If the lift starts accelerating upwards with an acceleration $g/3$, the time period of the pendulum will be

A spherical conducting shell of inner radius $r_{1}$ and outer radius $r_{2}$ has a charge $Q$. A charge $-q$ is placed at the centre of the shell. The surface charge density on the inner and outer surfaces of the shell will be

A $600 \,pF$ capacitor is charged by $200 \,V$ supply. It is then disconnected from the supply and is connected to another $300 \,pF$ capacitor. The electrostatic energy lost in the process is

A drop of water of radius $0.0015 \,mm$ is falling in air. If the coefficient of viscosity of air is $2.0 \times 10^{-5} \,kg / ms$, the terminal velocity of the drop will be (The density of water $=1.0 \times 10\, kg / m ^{3}$ and $g=10\, m / s ^{2}$ )

Which of the following truth tables corresponds to $ NAND $ gate.

The number density of free electrons in a copper conductor is $8.5 \times 10^{28} \cdot m ^{-3}$. How long does an electron take to drift from one end of a wire $3.0\, m$ long to its other end? The area of crosssection of the wire is $2.0 \times 10^{-6}\, m ^{2}$ and it is carrying a current of $3.0\,A$.

An intrinsic semiconductor has a resistivity of $ 0.50 \Omega\, m $ at room temperature. Find the intrinsic carrier concentration, if the mobilities of electrons and holes are $ 0.39\, m^2/Volt $ , and $ 0.11 m^2/Volt \,sec $ respectively

An artificial satellite moving in a circular orbit at a distance $h$ from the centre of the earth has a total energy $E_0$. Its potential energy is

A train approaching a railway crossing at a speed of $ 120 \,km/h $ sounds a whistle at frequency $ 640 \,Hz $ when it is $ 300\, m $ away from the crossing. The speed of sound in air is $ 340 \,m/s $ . What will be the frequency heard by a person standing on a road perpendicular to the track through the crossing at a distance of $ 400\, m $ from the crossing?

A plane electromagnetic wave of frequency $25 \,MHz$ travels in free space along the $x$-direction. At a particular point in space and time, $E=6.3 \hat{j} \,V / m$. At this point $B$ is equal to

A particle of mass $m$ moving with speed $v$ towards east strikes another particle of same mass moving with same speed $v$ towards north. After striking, the two particles fuse together. With what speed this new particle of mass $2\,m$ will move in north-east direction?

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