NEET
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- NEET
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- Physics
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- Units and Dimensions
NEET · Physics · Units and Dimensions
Match List-I with List-II, where List-II gives the dimensional...
Match List-I with List-II, where List-II gives the dimensional formulas of the physical quantities in List-I when Energy (), Momentum (), and Force () are chosen as the fundamental quantities.
Choose the correct answer from the options given below:
| List-I | List-II |
|---|---|
| (A) Mass | (I) |
| (B) Time | (II) |
| (C) Length | (III) |
| (D) Surface Tension | (IV) |
Choose the correct answer from the options given below:
Options
- A(A)-(II), (B)-(I), (C)-(IV), (D)-(III)
- B(A)-(III), (B)-(IV), (C)-(I), (D)-(II)
- C(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
- D(A)-(II), (B)-(IV), (C)-(I), (D)-(III)
Correct answer
D. (A)-(II), (B)-(IV), (C)-(I), (D)-(III)
Step-by-step solution
Let us express the standard fundamental quantities (Mass, Length, Time) in terms of Energy (), Momentum (), and Force ().
The standard dimensional formulas are:
To find Length ():
So, . This matches (C) with (I).
To find Time ():
So, . This matches (B) with (IV).
To find Mass ():
Since kinetic energy , we have .
Dimensionally, .
So, . This matches (A) with (II).
To find Surface Tension:
Surface Tension =
Substituting :
. This matches (D) with (III).
Thus, the correct matching is (A)-(II), (B)-(IV), (C)-(I), (D)-(III).
Answer: (A)-(II), (B)-(IV), (C)-(I), (D)-(III)
The standard dimensional formulas are:
To find Length ():
So, . This matches (C) with (I).
To find Time ():
So, . This matches (B) with (IV).
To find Mass ():
Since kinetic energy , we have .
Dimensionally, .
So, . This matches (A) with (II).
To find Surface Tension:
Surface Tension =
Substituting :
. This matches (D) with (III).
Thus, the correct matching is (A)-(II), (B)-(IV), (C)-(I), (D)-(III).
Answer: (A)-(II), (B)-(IV), (C)-(I), (D)-(III)