21. The ratio between kinetic energy and the total energy of the electrons of hydrogen atom according to Bohr's model is (a) \( 2: 1 \) [Pb. PMT 2002] (c) \( 1:-1 \) (b) \( 1: 1 \) (d) \( 1: 2 \)
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There are different data models like ___________ model, ___________ model and ___________ model.
(A) Network, (B) Hierarchical, (C) Relational
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20. A coconut of mass \( 2 Kg \) is falling from a coconut free of height \( 10 m \). Find the potential energy, kinetic energy and total energy at the following points. \( \left( g =10 m / s ^{2}\right) \) a) Before falling from the coconut tree. b) Just before hilting the ground. c) At a height \( 4 m \) from the ground. d) Which law is evident from this example?
(a) Given m = 2 kg h = 10 m Potential energy at before falling from the coconut tree. u = mgh u = 2 x 10 x 10 u = 200 joule Kinetic energy will...
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Explain briefly the results of Bohr’s theory for hydrogen atom.
i. The stationary states for electrons are numbered n = 1, 2, 3……. These integers are known as principal quantum numbers. ii. The radii of the stationary states are rn =...
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21. The ratio between kinetic energy and the total energy of the electrons of hydrogen atom according to Bohr's model is (a) \( 2: 1 \) [Pb. PMT 2002] (c) \( 1:-1 \) (b) \( 1: 1 \) (d) \( 1: 2 \)
Kuch bhi
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The ratio of molecular weight of hydrogen and oxygen in water is 1 : 8. (The relation between hydrogen and oxygen in linear
Correct option is (A) y = 8x \(\because\) Quantities of hydrogen and oxygen are x and y and their quantity are in ratio 1 : 8. \(\therefore\) x : y = 1 : 8 \(\Rightarrow\) \(\frac xy=\frac18\) \(\Rightarrow\) y =...
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The ratio of molecular weight of hydrogen and oxygen in water is 1 : 8. (The relation between hydrogen and oxygen in linear
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According to Neils Bohr’s model, electrons are present in A) shells
Correct option is A) shells
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Bohr’s model could not explain the spectra of ………………. A) Hydrogen
D) Heavier atoms
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According to quantum mechanical model of the atom, the properties of elements can be correlated to their …………….
Correct option is: (D) electronic configuration According to quantum mechanical model of the atom, the properties of elements can be corelated to their electronic configuration
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