Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • NCERT
  • The cylindrical tube of a spray pump has a cross-section of 8.0 cm^2 one end of which has 40 fine holes each of diameter 1.0 mm. If the liquid flow inside the tube is 1.5 m min^–1, what is the speed of ejection of the liquid through the holes ?

Q 10.16 The cylindrical tube of a spray pump has a cross-section of 8.0 cm2 one end of which has 40 fine holes each of diameter 1.0 mm. If the liquid flow inside the tube is 1.5 m min-1, what is the speed of ejection of the liquid through the holes?

Answers (1)

best_answer

Cross-sectional area of cylindrical tube is a1 = 8.0 cm2

The total area of the 40 fine holes is a2

\\a_{2}=40\pi (\frac{d^{2}}{4})\\ a_{2}=40\times \pi \times \frac{(10^{-3})^{2}}{4}\\ a_{2}=3.143\times 10^{-5}m^{2}

Speed of liquid inside the tube is v1 = 1.5 m min-1

Let the speed of ejection of fluid through the holes be v2

Using the continuity equation

\\a_{1}v_{1}=a_{2}v_{2}\\ v_{2}=\frac{a_{1}v_{1}}{a_{2}}\\ v_{2}=\frac{8\times 10^{-4}\times 1.5}{60\times 3.143\times 10^{-5}}\\ v_{2}=0.636\ m\ s^{-1}

Posted by

Sayak

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

CBSE Class 12 board exams 2025 to have 50% competency-based questions; no change in 10th
anam-khan

CBSE Class 12 board exams 2024 over; expected result date, trends of last 10 years
anam-khan

CBSE Class 12 accountancy board exam analysis 2024 out; paper rated easy, balanced

Latest Question