Q.

Match List I with List II.

  List I   List II
(A) Young's Modulus (I) ML–1T–1
(B) Torque (II) ML–1T–2
(C) Coefficient of Viscosity (III) M–1L3T–2
(D) Gravitational Constant (IV) ML2T–2

 

Choose the correct answer from the options given below :          [2025]

1 (A)-(I), (B)-(III), (C)-(II), (D)-(IV)  
2 (A)-(II), (B)-(I), (C)-(IV), (D)-(III)  
3 (A)-(IV), (B)-(II), (C)-(III), (D)-(I)  
4 (A)-(II), (B)-(IV), (C)-(I), (D)-(III)  

Ans.

(4)

(A) [Y]=FA(△ll) ⇒ MLT–2L2=ML–1T–2

(B) Torque (τ→)=r→×F→=L×MLT–2=ML2T–2

(C) Coefficient of viscosity ⇒ F=ηAdVdt

          [η]=MLT–2L2×T=ML–1T–1

(D) Gravitational constant (G)

          F=GM1M2r2

          [G]=F·r2m1m2=MLT–2×L2M2=M–1L3T–2