alleryFor ideal fluid, viscosity:
AHigh
BZERO (definition of ideal fluid; no friction between layers)
CEqual to water
DVariable
Answer & Solution
Correct answer: B. ZERO (definition of ideal fluid; no friction between layers)
**Ideal fluid:** η = 0 (inviscid), incompressible, irrotational, steady.
Bernoulli applies exactly.
Real fluids have non-zero η, hence drag forces and energy losses.
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