Units and Dimensions – Exercise – 2

86. Dimension of velocity gradient is :

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

Answer
Answer : (a)
Explanation
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87. Which of the following is the dimensions of the coefficient of friction?

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

Answer
Answer : (b)
Explanation
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88. The dimensional formula for thermal resistance is :

(a) M L 2–3 –1
(b) M L 2–2 –1
(c) M L 2–3 –2
(d)–1 L –23 K

Answer
Answer : (d)
Explanation
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89. Dimensions of relative density is :

(a) M L–2
(b) M L–3
(c)2 L–6
(d) dimensionless

Answer
Answer : (d)
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90. The dimensional representation of specific resistance in terms of charge Q is :

(a) M L 3–1 –2
(b) M L 2–2 2
(c) M L T –2 –1
(d) Not expressible in terms of M, L and T

Answer
Answer : (a)
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