Question

Modulus of rigidity of ideal liquids is

• A. Infinity
• B. Zero
• C. Unity
• D. Some finite small non-zero constant value.

Answer 1

Answer: (B)

Zero

Answer 2

: As $\eta = \frac{Shearingstress}{shearingstrain}$

and since liquids cannot sustain shearing stress

$\therefore\eta = 0$in their case.