Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • If  Hydrogen  molcule strike per second at a fixed wall of area <img alt="2 \,\,cm

If  10^{23} Hydrogen  molcule strike per second at a fixed wall of area 2 \,\,cm^{2}, at an angle of  45^{\circ} to the normal, and rebound elastically with a speed of  10^3 \mathrm{~m} \mathrm{~s}^{-1}, what is the pressure of near by wall.
{ ( mass \,\,\,of } \mathrm\,\,\,{H} \text { molecule }=3.32 \times 10^{-27} \mathrm{~kg} \text { ) } \\

Option: 1

2.35 \times \operatorname{10}^3 \mathrm\,{Nm}^{-2} \\


Option: 2

4.7 \times \operatorname{10}^3 \mathrm\,{Nm}^{-2} \\


Option: 3

2.35 \times \operatorname{10}^2 \mathrm\,{Nm}^{-2} \\


Option: 4

4.7\times \operatorname{10}^2 \mathrm\,{Nm}^{-2} \\^{}


Answers (1)

P_i=P_f \\
F=\frac{d p}{d t}=2 n p f \cos 45^{\circ}=2 \mathrm{mv} \cos 45^{\circ} \\

 n= no. of hydrogen molecule / second 

P=\frac{F}{A}=\frac{2 \,n\, m\, v \cos 45^{\circ}}{2 \times 10^{-4}} \\
     =2.35 \times 10^3 \mathrm\,\,{Nm}^{-2} \\
 

Posted by

Sumit Saini

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

NEET exam stress? 17 year-old MBBS aspirant dies by suicide in Goa; police launch probe
anam-khan

NEET UG 2026 Exam LIVE: Re-NEET dates soon for MBBS, BDS admissions; registration fee refund, NTA paper leak
anam-khan

'Abolish NEET', says Tamil Nadu CM Vijay citing structural flaws; backs 12th marks for MBBS admission

Latest Question