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Test: Quantum Mechanical Model of Atom - 1 - Question 1

The de Broglie wavelength associated with a ball of mass 200 g and moving at a speed of 5 metres/hour, is of the order of (h = 6.625 x 10^{-34} J s) is

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Test: Quantum Mechanical Model of Atom - 1 - Question 2

A body of mass 10 g is moving with a velocity of 100 m s^{-1}. The wavelength associated with it is

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Test: Quantum Mechanical Model of Atom - 1 - Question 3

The wavelength of an electron moving with velocity of 10^{7} m s^{-1} is

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Test: Quantum Mechanical Model of Atom - 1 - Question 4

What will be the wavelength of an electron moving with 1/10th of velocity of light?

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Test: Quantum Mechanical Model of Atom - 1 - Question 5

If the velocity of an electron in Bohr’s first orbit is 2.19 x 10^{6} m s^{-1}, what will be the de Broglie wavelength associated with it?

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Test: Quantum Mechanical Model of Atom - 1 - Question 6

Match the column I with column II and mark the appropriate choice.

Test: Quantum Mechanical Model of Atom - 1 - Question 7

If uncertainty principle is applied to an object of mass 1 milligram, the uncertainty value of velocity and position will be

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Test: Quantum Mechanical Model of Atom - 1 - Question 8

What will be the uncertainty in velocity of a bullet with a mass of 10 g whose position is known with ± 0.01 mm?

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Test: Quantum Mechanical Model of Atom - 1 - Question 9

What will be the mass of a particle if uncertainty in its position is 10^{-8} m and velocity is 5.26 x 10^{-25} m s^{-1}?

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Test: Quantum Mechanical Model of Atom - 1 - Question 10

What will be the uncertainty in velocity of an electron when the uncertainty in its position is 1000 Å?

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