Question
Physics Question on Units and measurement
Match List I with List II | List I | List II | |
---|---|---|---|
A. | Young's Modulus (Y) | I. | [M L-1 T-1 ] |
B. | Co-efficient of Viscosity (η) | II. | [M L2 T-1 ] |
C. | Planck's Constant (h) | III. | [M L-1 T-2 ] |
D. | Work Function (ϕ) | IV. | [M L2 T-2 ] |
Choose the correct answer from the options given below: |
A
A-I, B-III, C-IV, D-II
B
A-I, B-II, C-III, D-IV
C
A-II, B-III, C-IV, D-I
D
A-III, B-I, C-II, D-IV
Answer
A-III, B-I, C-II, D-IV
Explanation
Solution
The correct answer is (D) : A-III, B-I, C-II, D-IV
Y= Strain Stress =Δℓ/ℓF/A=[L2][MLT−2]=[ML−1T−2]
F=6πηrv⇒η=6πrvF
[η]=[L][LT−1][MLT−2]=[ML−1T−1]
E=hv⇒h=vE=[T−1][ML2T−2]=[ML2T−1]
Work function has same dimension as that of energy, so [ϕ]=[ML2T−2]