AP EAPCET 2024 - 19th May Evening Shift | Atomic Structure Question 15 | Chemistry

In the ground state of hydrogen atom, electron absorbs 1.5 times energy than the minimum energy $\left(2.18 \times 10^{-18} \mathrm{~J}\right)$ to escape from the atom. The wavelength of the emitted electron (in $m$ ) is ( $m_e=9 \times 10^{-31} \mathrm{~kg}$ )

$\frac{h \times 10^{24}}{\sqrt{1.962}}$

$\frac{h}{\sqrt{1.962}} \times 10^{23}$

$\frac{h}{\sqrt{1.962}} \times 10^{25}$

$\frac{h}{\sqrt{1.962}} \times 10^{22}$

AP EAPCET 2024 - 19th May Evening Shift

MCQ (Single Correct Answer)

-0

A golf ball of mass $m \mathrm{~g}$ has a speed of $50 \mathrm{~ms}^{-1}$. If the speed can be measured within accuracy of $2 \%$ the uncertainty in the position is (in m)

$\frac{h}{4 \pi m}$

$\frac{h}{16 \pi m}$

$\frac{h}{4 \pi m} \times 10^3$

$\frac{h}{16 \pi m} \times 10^3$

AP EAPCET 2024 - 18th May Morning Shift

MCQ (Single Correct Answer)

-0

The de-Broglie wavelength of a particle of mass 1 mg moving with a velocity of $10 \mathrm{~ms}^{-1}$ is $\left(\mathrm{h}=6.63 \times 10^{-34} \mathrm{Js}\right.$ )

$6.63 \times 10^{-20} \mathrm{~m}$

$663 \times 10^{-31} \mathrm{~m}$

$663 \times 10^{-34} \mathrm{~m}$

$663 \times 10^{-22} \mathrm{~m}$

AP EAPCET 2024 - 18th May Morning Shift

MCQ (Single Correct Answer)

-0

Correct set of four quantum numbers for the valence electron of strontium $(z=38)$ is

$5.0 .0+\frac{1}{2}$

$51, a+\frac{1}{2}$

$5.11+\frac{1}{2}$

$6, a a+\frac{1}{2}$

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