When a block of mass $M$ is suspended by a long wire of length $L$, the length of the wire becomes $(L + l).$ The elastic potential energy stored in the extended wire is:

The displacement of a particle executing simple harmonic motion is given by $y = A_0 + A \sin \omega t + B \cos \omega t.$

The number of sigma ($\sigma$) and pi ($\pi$) bonds in pent-2-en-4-yne is:

The structure of intermediate A in the following reaction is:

The correct structure of tribromooctaoxide is:

4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing energy. The correct option is:

Consider the following features: $\newline$(a) Organ system level of organisation $\newline$(b) Bilateral symmetry $\newline$(c) True coelomates with segmentation of body $\newline$Select the correct option of animal groups which possess all the above characteristics.