1
AP EAPCET 2021 - 20th August Morning Shift
+1
-0

Water does not wet an oily glass because

A
cohesive force of oil is greater than adhesive force between oil and glass
B
cohesive force of oil is greater than cohesive force of water
C
oil repels water
D
cohesive force of water is greater than adhesive force between water and oil molecules
2
AP EAPCET 2021 - 19th August Evening Shift
+1
-0

Identify the incorrect statement regarding Reynold's number $$\left(R_e\right)$$.

A
For $$R_e < 1000$$, flow is laminar.
B
For $$1000 < R_e < 2000$$, flow is steady.
C
For $$R_e > 2000$$, flow is turbulent.
D
$$R_e$$ is a dimensionless number.
3
AP EAPCET 2021 - 19th August Morning Shift
+1
-0

The lower end of a capillary tube is dipped into water and it is observed that the water in capillary tube rises by 7.5 cm. Find the radius of the capillary tube used, if surface tension of water is 7.5 $$\times$$ 10$$^{-2}$$ Nm$$^{-1}$$. Angle of contact between water and glass is 0$$\Upsilon$$ and acceleration due to gravity is 10 ms$$^{-2}$$.

A
0.2 cm
B
0.1 cm
C
0.4 mm
D
0.2 mm
4
AP EAPCET 2021 - 19th August Morning Shift
+1
-0

An ideal liquid flows through a horizontal tube of variable diameter. The pressure is lowest where the

A
velocity is highest
B
velocity is lowest
C
diameter is largest
D
velocity is intermediate
EXAM MAP
Medical
NEET