⇦ | ⇨ |
Van der waals,equation of state is(p+a/v²)(V-b)=nRT. The dimensions of a and b are
Options
(a) [ML³T²],[ML³T⁰]
(b) [ML⁵T⁻²],[M⁰L³T⁰]
(c) [M²LT²],[ML³T²]
(d) [ML²T],[ML²T²]
Correct Answer:
[ML⁵T⁻²],[M⁰L³T⁰]
Explanation:
((p+a/v²)(V-b)) / nT =R
Since we have (p+a/v²), the term a/v² needs to have units of pressure for subtraction to proceed.
Therefore, aV² = pressure
a = pressure x Volume²
=[ML⁻¹T⁻²] x (L³)²
=ML⁵T⁻²
In case of variable b, it should be same as volume as v-b should work.
b=(L³)
Related Questions: - The frequency of a light wave in a material is 2 x 10¹⁴ Hz and wavelength is 5000Å.
- In Young’s double slit experiment, the intensity of light coming from the first slit
- Four point masses, each of value m, are placed at the corners of a square ABCD
- A Carnot engine, having an efficiency of η=1/10 as heat engine, is used
- If fundamental frequency of closed pipe is 50 Hz then frequency of 2nd overtone
Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Physical World and Measurement
(103)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The frequency of a light wave in a material is 2 x 10¹⁴ Hz and wavelength is 5000Å.
- In Young’s double slit experiment, the intensity of light coming from the first slit
- Four point masses, each of value m, are placed at the corners of a square ABCD
- A Carnot engine, having an efficiency of η=1/10 as heat engine, is used
- If fundamental frequency of closed pipe is 50 Hz then frequency of 2nd overtone
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Physical World and Measurement (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply