Units & Dimensions – Exercise – 2

51. Dimensional formula for Boltzmann’s constant is :

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

Answer
Answer : (c)
Explanation
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52. The dimension for the universal gas constant is :

(a) M L 2 T –2 θ –1
(b) M 2 L T –2 θ –1
(c)1 T –1 θ –2
(d)L 2 T –1 θ –3
Answer
Answer : (a)
Explanation
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53. The unit of thermal conductivity is :

(a) J –1 m–1 s –1–2
(b) J m s K –1
(c) J 2 m s K –1
(d) J m –1 s –1 –1
Answer
Answer : (d)
Explanation
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54. What is the dimensional formula of the ratio of linear momentum to angular momentum ?

(a) M 0–10
(b) M 1 L  0
(c) M 010
(d) M 01 1
Answer
Answer : (a)
Explanation
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55. Dimensional formula for electromotive force (EMF) ?

(a) M 2 L T –1 K –3
(b)12 –3 K –1
(c) M 1 L –3 –1
(d) M 1 L 3 K –1

Answer
Answer : (b)
Explanation
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