Q. Consider the $P-V$ diagram given below for a cyclic process. Find the net heat supplied to the system during the process.

1. $0.625\pi J$
2. $0.25\pi J$
3. $25\pi J$
4. $0.2\pi J$

Q. A spring of force constant $k=100N/m$ is compressed to $x=0.5m$ by a block of mass $100g$ and released. There should be a box placed at a distance $d$ on the ground so that the block falls in it. Find the distance $d.$

1. $5m$
2. $10m$
3. $15m$
4. $20m$

Q. In the given circuit, find the current through $6\Omega$ resistor.

1. $10A$
2. $7A$
3. $25A$
4. $30A$

Q. Four moles of a diatomic gas is heated from $0^{\circ }C$ to ${50}^{\circ }C$. Find the heat supplied to the gas if work done by it is zero.

1. $700R$
2. $600R$
3. $500R$
4. $100R$

Q. For the spherical interface shown in the figure, the two different media with refractive indices $n_1=1.4$ and $n_2=1.25$ are present as shown. The image will be formed at

1. $-\frac{125}{3}cm$
2. $-\frac{50}{6}cm$
3. $-\frac{25}{2}cm$
4. $-20cm$