Rutherford’s alpha(α) particles scattering experiment’ resulted into the discovery of nucleus of an atom.
The correct option is (a) Atomic nucleus.
In Fig. 9.26, A, B, C and D are four points on a circle. AC and BD intersect at a point E such that ∠ BEC = 130° and ∠ ECD = 20°. Find ∠ BAC.