Question

Young’s modulus of elasticity 𝑌 is expressed in terms of three derived quantities, namely, the gravitational constant 𝐺, Planck’s constant ℎ and the speed of light 𝑐, as 𝑌 = 𝑐 𝛼ℎ 𝛽𝐺 𝛾 . Which of the following is the correct option?

• A. 𝛼 = 7, 𝛽 = −1, 𝛾 = −2
• B. 𝛼 = −7, 𝛽 = −1, 𝛾 = −2
• C. 𝛼 = 7, 𝛽 = −1, 𝛾 = 2
• D. 𝛼 = −7, 𝛽 = 1, 𝛾 = −2

Answer 1

Answer: (A)

𝛼 = 7, 𝛽 = −1, 𝛾 = −2

Answer 2

The correct option is(A): 𝛼 = 7, 𝛽 = −1, 𝛾 = −2.