If the electron revolving in the 3rd Bohr’s orbit of Hydrogen species has a radius is R. Then what will be its radius in the 4th orbit in terms of R? 1) (25/9)R 2) (16/9)R 3) (36/9)R 4) (9/16)R

A particle has initial velocity \(\mathbf{v} = 5\mathbf{i}\) and is at origin at this instant. Its acceleration is given by \((3\mathbf{i} + 4\mathbf{j})\). When the particle's \(x\)-coordinate is 16 units, then its speed is: (a) 13 units (b) \(\sqrt{161}\) units (c) ...

Two masses 𝑚1 = 4 𝑔𝑚 and 𝑚2 = 25 𝑔𝑚 are having same kinetic energy, find the ratio of linear momentum ? (a) 1 : 5 (b) 2 : 5 (c) 1 : 1 (d) 1 : 6