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Physics
Multiple Choice Question with Only One Choice Correct A parallel beam of fast moving electrons is incident normally on a narrow slit. A screen is placed at a large distance from the slit. If the speed of the electrons is increased, which of the following statements is correct? (a) Diffraction pattern is not observed on the screen in the case of electrons (b) The angular width of the central maximum of the diffraction pattern will increase (c) The angular width of the central maximum will decrease (d) The angular width of the central maximum will remain the same
Chemistry
Fill in the Blanks : The uncertainity principle and the concept of wave nature of matter were proposed by ........ and ........ , respectively. (Heisenberg, Schrodinger, Maxwell, de Broglie)
Mathematics
Let a_k = k(¹⁰C_k), b_k = (10 - k) (¹⁰C_k) and If , find the value of a + b.

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