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Friday, 9 October

NEET UG 2019 · Physics · Question 38

NEET 2019 Physics, question 38

Question 38 of the NEET 2019 paper (code P1) is a Physics question from Mechanical Properties of Fluids. Its idea, Speed of Efflux, was asked twice, in 2019 and 2025, across NEET 2017–2026. The NTA final answer key gives option 1.

Updated 2026-10-08

Q38 · Physics

A small hole of area of cross-section 2 mm² is present near the bottom of a fully filled open tank of height 2 m. Taking g=10g = 10 m/s², the rate of flow of water through the open hole would be nearly :

  1. 112.6×10−612.6\times10^{-6} m³/sOfficial answer
  2. 28.9×10−68.9\times10^{-6} m³/s
  3. 32.23×10−62.23\times10^{-6} m³/s
  4. 46.4×10−66.4\times10^{-6} m³/s

Official answer: option 1 · NTA final answer key

Same idea

Speed of Efflux, in other papers

NEET asked this idea twice, in 2019 and 2025. The other question below.

  • 2025 Q24A balloon is made of a material of surface tension SS and its inflation outlet (from where gas is filled in it) has small area AA. It is…One-line MCQ · Hard

Speed of Efflux: every question and how it was framed

The chapter

Mechanical Properties of Fluids in ten years of NEET

15 questions from 2017–2026, asked in 10 of 10 papers, about 1.4 a paper. Fluid Statics and Dynamics alone had 5.

Chapter analysisStudy this chapterPractise this chapter

Mechanical Properties of Fluids: questions per paper

0241’171’182’191’201’212’222’231’242’252’26