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Beyond a critical speed, inertial forces dominate over viscous forces, disrupting the orderly motion of streamline flow, leading to chaotic, turbulent flow with eddies and mixing, as noted in the chapter.
Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.
In streamline flow, fluid particles follow fixed paths (streamlines) with constant velocity at each point, occurring at low speeds where viscous forces dominate, not requiring high speed or turbulence. As per NCERT, applying relevant law/formula with correct units and sign convention leads to Particles follow fixed paths. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.
Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.
Streamline flow occurs when viscous forces dominate inertial forces, keeping fluid motion steady and layered. This requires a low velocity, below the critical speed where turbulence begins. As per NCERT, applying relevant law/formula with correct units and sign convention leads to Low velocity. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.
Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.
In streamline flow, each streamline represents the path of a fluid particle with a unique velocity at each point. If streamlines crossed, a particle at the intersection would have two different velocities simultaneously, which is impossible in steady flow.
Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.
The equation of continuity assumes the fluid is incompressible, meaning its density (ρ) remains constant, even as velocity increases in a narrowing pipe, ensuring mass conservation (Av = constant). As per NCERT, applying relevant law/formula with correct units and sign convention leads to Because the fluid is incompressible. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.
Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.
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