NEET
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- Physics
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- Units and Dimensions
NEET · Physics · Units and Dimensions
Match List-I with List-II. List-I List-II (A) Planck Length (I) c^...
Match List-I with List-II.
Choose the correct answer from the options given below:
| List-I | List-II |
|---|---|
| (A) Planck Length | (I) |
| (B) Planck Mass | (II) |
| (C) Planck Time | (III) |
| (D) Planck Energy | (IV) |
Choose the correct answer from the options given below:
Options
- A(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
- B(A)-(II), (B)-(III), (C)-(IV), (D)-(I)
- C(A)-(II), (B)-(I), (C)-(IV), (D)-(III)
- D(A)-(I), (B)-(II), (C)-(III), (D)-(IV)
Correct answer
C. (A)-(II), (B)-(I), (C)-(IV), (D)-(III)
Step-by-step solution
First, write the dimensional formulas for the fundamental constants:
Speed of light,
Universal gravitational constant,
Planck's constant,
Let us evaluate the common term :
To obtain Planck Length , we need to multiply by a power of that yields .
Multiplying by gives:
.
Thus, Planck Length . (A II)
To obtain Planck Time , multiply by :
.
Thus, Planck Time . (C IV)
Now evaluate the term :
To obtain Planck Mass , multiply by :
.
Thus, Planck Mass . (B I)
To obtain Planck Energy , multiply by :
.
Thus, Planck Energy . (D III)
The correct matching is (A)-(II), (B)-(I), (C)-(IV), (D)-(III).
Answer: (A)-(II), (B)-(I), (C)-(IV), (D)-(III)
Speed of light,
Universal gravitational constant,
Planck's constant,
Let us evaluate the common term :
To obtain Planck Length , we need to multiply by a power of that yields .
Multiplying by gives:
.
Thus, Planck Length . (A II)
To obtain Planck Time , multiply by :
.
Thus, Planck Time . (C IV)
Now evaluate the term :
To obtain Planck Mass , multiply by :
.
Thus, Planck Mass . (B I)
To obtain Planck Energy , multiply by :
.
Thus, Planck Energy . (D III)
The correct matching is (A)-(II), (B)-(I), (C)-(IV), (D)-(III).
Answer: (A)-(II), (B)-(I), (C)-(IV), (D)-(III)