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Class 11thPhysics NCERT Exemplar Solutions Class 12th Chapter EightDIMENSIONAL FORMULAEPhysicsUnits and Measurement

Given below are two statements : One is labeled as Assertion A and the other is labeled as Reason R.

Assertion A : Product of Pressure (P) and time (t) has the same dimension as that of coefficient of viscosity.

Reason R : Coefficient of viscosity = F o r c e V e l o c i t y     g r a d i e n t  

Choose the correct answer from the options given below:

Option 1 - <p>Both A and R true, and R is correct explanation of A.</p>
Option 2 - <p>Bothe A and R are true but R is NOT the correct explanation of A.</p>
Option 3 - <p>A is true but R is false</p>
Option 4 - <p>A is false but R is true.</p>
4 Views|Posted 4 months ago
Asked by Shiksha User
1 Answer
R
4 months ago
Correct Option - 4
Detailed Solution:

Pressure * time = F t A = [ M L T − 2 ] [ T ] [ L − 2 ] = [ M L − 1 T − 1 ]  

 Coefficient of viscosity, η = [ M L − 1 T − 1 ]  

  F v i s c o u s = − η A Δ v Δ y  

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Similar Questions for you

If force [F], acceleration [A] and time [T] are chosen as the fundamental physical quantities. Find the dimensions of energy.
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AK
Alok Kumar Singh

E ∝ F? A? T?
[M¹L²T? ²] ∝ [M¹L¹T? ²]? [LT? ²]? [T]?
a = 1
a + b = 2 ⇒ b = 1
-2a - 2b + c = -2
⇒ c = 2
a = 1 b = 1 c = 2
E ∝ [F] [A] [T²]

Match List I with List II.
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VB
Vishal Baghel

[C] = Q/V = Q/ (W/Q) = Q²/W = (A²T²)/ (M¹L²T? ²) = M? ¹L? ²T? A²
[ε? ] = C/ (4πr²) * (Fr²/q²) = M? ¹L? ³T? A²
[µ? ] = 4πrF/I²l = M¹L¹T? ²A? ²
[E] = F/q = (MLT? ²)/ (AT) = MLT? ³A? ¹

Match List-I with List-II.

                  List-I                                             List-II

           (A)  Torque                          (i) MLT-1

           (B)  Impulse                         (ii) MT-2

           (C)  Tension                         (iii) ML2T-2

           (D)  Surface Tension           (iv) MLT-2

           Choose the most appropriate answer from the option given below:

RP
Raj Pandey

(a) Torque ® ML2T-2 ↑ (iii)

(b) Impulse ® MlT-1 ↑ (i)

(c) Tension ↑ MLT-2 ↑ (iv)

(d) Surface Tension ↑  M L T − 2 L = M T − 2 (ii)

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Physics NCERT Exemplar Solutions Class 12th Chapter Eight 2025

Physics NCERT Exemplar Solutions Class 12th Chapter Eight 2025

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