Download App

2. structure of atom — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry2. structure of atom1 Mark
MCQ
The de-Broglie wavelength associated with a particle of mass ${10^{ - 6}}\,kg$ moving with a velocity of $10\,\,m{s^{ - 1}}$, is
  • A
    $6.63 \times {10^{ - 22}}m$
  • ✓
    $6.63 \times {10^{ - 29}}\,m$
  • C
    $6.63 \times {10^{ - 31}}\,m$
  • D
    $6.63 \times {10^{ - 34}}\,m$
✓

Answer

Correct option: B.
$6.63 \times {10^{ - 29}}\,m$
b
(b) Mass of the particle $(m) = {10^{ - 6}}$ $kg$ and velocity of the particle $(v) = 10\,m{s^{ - 1}}$

$\lambda = \frac{h}{{mv}} = \frac{{6.63 \times {{10}^{ - 34}}}}{{{{10}^{ - 6}} \times 10}} = 6.63 \times {10^{ - 29}}\,m$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 2. structure of atom→2. structure of atom — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Radius of the nucleus is equal to $10^{-12}\, cm.$ and that of the atom is equal to $10^{-8} \,cm.$ What is the fraction of the volume of the atom occupied by nucleus ?
→
Which of the following has the smallest size
→
What is the ratio of time periods $(T_1 / T_2)$  in second orbit of hydrogen atom to third orbit of  $He^+$  ion?
→
Suppose two elements $X$ and $Y$ combine to form two compounds $XY_2$ and $X_2Y_3$. If $0.05$ mole of $XY_2$ weighs $5\, g$ while $3.011 \times 10^{23}$ molecules of $X_2Y_3$ weighs $85\, g$, then atomic masses of $X$ and $Y$ are respectively :
→
Which of the following statements are correct for an electron that has $n = 4$ and $m = -2$ ?
→
Which of the following is weakly acidic
→
How many neutrons are present in protium, deuterium and tritium respectively?
→
The molecules with most polar bond, is
→
In which of the following reaction $H_2O_2$ is working as reducing agent ?
→
Which of the following compounds contain at least one secondary alcohol ?
→