# Units and Dimensions – 2 – 7

81. The dimensions of the ratio of angular to linear momentum is :

(a) M 0 L 00
(b) M L T –1
(c) M L 2–1
(d)–1 L –1–1

ANSWER
Answer : (a)

EXPLANATION
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82. Dimensions of impulse are :

(a) M L –2–3
(b) M L –2
(c) M L T –1
(d) M L T –2

ANSWER
Answer : (c)

EXPLANATION
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83. [M L 2–3 –1] is the dimensional formula for :

(a) capacitance
(b) resistance
(c) resistivity
(d) potential difference

ANSWER
Answer : (d)

EXPLANATION
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84. The dimensional formula [M L T –3] is more closely associated with :

(a) power
(b) energy
(c) intensity
(d) velocity gradient

ANSWER
Answer : (c)

EXPLANATION
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85. If C and R denote capacity and resistance, the dimensions of CR are :

(a) M 0 L 0 T
(b)1 L 2 T
(c)1 L 1 T
(d) not expressible in terms of M, L and T

ANSWER
Answer : (a)

EXPLANATION
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