Honey bees also produce beeswax,which finds many uses in industry,such as:

In a potentiometer experiment,the balancing length for a cell is $240 \ cm$. When a resistance of $2 \ \Omega$ is connected in parallel with the cell,the balancing length becomes $120 \ cm$. The internal resistance of the cell is ................. $\Omega$.

The differential equation of all circles which pass through the origin and whose centres lie on the $Y$-axis is

The integrating factor of the differential equation $(x \log x) \frac{dy}{dx} + y = 2 \log x$ is

If \(x_1\) be the size of the magnified image and \(x_2\) the size of the diminished image in Lens Displacement Method, then the size of the object is :

The period of $f(x)=\cos \left(\frac{x}{3}\right)+\sin \left(\frac{x}{2}\right)$ is (in $\pi$)