Physics

# State any two limitations of dimensional analysis.

##### SOLUTION

Limitations of dimensional analysis

(a). Dimensional analysis tell us nothing about the dimensionless constant of an equation.

(b). The method cannot be used if the physical quantity contains more than one term in one side of the equation

You're just one step away

Subjective Medium Published on 18th 08, 2020
Questions 244531
Subjects 8
Chapters 125
Enrolled Students 199

#### Realted Questions

Q1 Single Correct Medium
Which of the following does not give the unit of energy ?
• A. Watt second
• B. Kilowatt hour
• C. Newton meter
• D. Pascal metre

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q2 Single Correct Medium
Match the physical quantities given in Column I with dimensions expressed in terms of mass (M), length (L) time (T), and charge (Q) given in Column II.
 Column I Column II i. Angular momentum a. $ML^2T^{-2}$ ii. Torque b. $ML^2T^{-1}$ iii. Inductance c. $M^{-1}L^{-2}T^2Q^2$ iv. Latent heat d. $ML^2Q^{-2}$ v. Capacitance e. $ML^3T^{-1}Q^{-2}$ vi. Resistivity f. $L^2T^{-2}$
• A. $i \rightarrow c., ii \rightarrow a., iii \rightarrow d., iv \rightarrow f., v \rightarrow b., vi \rightarrow e$
• B. $i \rightarrow b., ii \rightarrow a., iii \rightarrow d., iv \rightarrow f., v \rightarrow c., vi \rightarrow e$
• C. $i \rightarrow b., ii \rightarrow e., iii \rightarrow d., iv \rightarrow f., v \rightarrow c., vi \rightarrow a$
• D. $i \rightarrow b., ii \rightarrow a., iii \rightarrow f., iv \rightarrow d., v \rightarrow c., vi \rightarrow e$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q3 TRUE/FALSE Medium
State whether True or False :
Scalar and Vector, both obey law of vector algebra.
• A. True
• B. False

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q4 Single Correct Medium
The potential energy of a particle varies with distance $x$ as $U = \dfrac{Ax^{1/2}}{x^2 + B}$, where A and B are constants. The dimensional formula for A x B is:
• A. $M^1L^{7/2}T^{-2}$
• B. $M^1L^{11/4}T^{-2}$
• C. $M^1L^{5/2}T^{-2}$
• D. $M^1L^{9/2}T^{-2}$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q5 Single Correct Medium
The order of magnitude of 0.00701 is:
• A. -3
• B. -1
• C. 2
• D. 1

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020