List of top Physics Questions

The $x-t$ plot shown in the figure below describes the motion of the particle, along $x-axis$, between two positions $A$ and $B$. The particle passes through two intermediate points $P_1$ and $P_2$ as shown in the figure

Two wires with currents $2\,A$ and $1\,A$ are enclosed in a circular loop. Another wire with current $3\, A$ is situated outside the loop as shown. Then $ \oint{\overrightarrow{B}}.\overrightarrow{dl} $ around the loop is

Two perfectly black spheres $A$ and $B$ having radii $8\,cm$ and $2\,cm$ are maintained at temperatures $127^{\circ}C$ and $527^{\circ}C$ respectively. The ratio of the energy radiated by $A$ to that by $B$ is

In frequency modulation

The magnetic flux linked with a coil of $N$ turns of area of cross section $A$ held with its plane parallel to the field $B$ is

Water is heated from $0^\circ\,C$ to $10\, ^\circ\,C$. then its volume

A biconvex lens of focal length f forms a circular image of radius r of sun in focal plane. Then which option is correct ?

The velocity $v$ (in $cm / s$ ) of a particle is given in terms of time $t$ (in seconds) by the equation, $v=a t+\frac{b}{t+c}$ The dimensions of $a, b$ and $c$ are :