MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Fluid Mechanics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If a glass tube of 10 mm diameter is immersed in water, what will be the rise or fall in capillary? |
| A. | (Take surface tension = 0.075 N/m, g = 10 m/s2 and angle of contact = 0) |
| B. | 0.75 |
| C. | 1.5 |
| D. | 3 |
| E. | 6 |
| Answer» D. 3 | |
| 2. |
The ratio of the surface tension S and density ρ of liquid 1 and 2 are 1:2 and 1:4 respectively. Equal amount of the two liquids is poured into two identical tubes. what will be the ratio of the rise in the liquid level in the two tubes? (Assume the angle of contact to be same) |
| A. | 1:2 |
| B. | 2:1 |
| C. | 8:1 |
| D. | 1:8 |
| Answer» C. 8:1 | |
| 3. |
A liquid jet of 5 cm diameter has a pressure difference of N/m2. (Take surface tension as 0.075 N/m) |
| A. | 12 |
| B. | 6 |
| C. | 3 |
| D. | 1.5 |
| Answer» E. | |
| 4. |
A soap bubble of d mm diameter is observed inside a bucket of water. If the pressure inside the bubble is 0.075 N/cm2, what will be the value of d? (Take surface tension as 0.075 N/m) |
| A. | 0.4 |
| B. | 0.8 |
| C. | 1.6 |
| D. | 4 |
| Answer» C. 1.6 | |
| 5. |
What will be the diameter (in mm) of a water droplet, the pressure inside which is 0.05 N/cm2 greater than the outside pressure? (Take surface tension as 0.075 N/m) |
| A. | 3 |
| B. | 0.3 |
| C. | 0.6 |
| D. | 6 |
| Answer» D. 6 | |
| 6. |
A soap film is trapped between a frame and a wire of length 10 cm as shown. |
| A. | If the surface tension is given as 0.0049 N/m, what will be the value of m (in mg) such that the wire remains in equilibrium? |
| B. | 0.1 |
| C. | 1 |
| D. | 10 |
| E. | 100 |
| Answer» E. 100 | |