MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Laplace correction makes use of which of the following processes? |
| A. | Isothermal |
| B. | Adiabatic |
| C. | Isochoric |
| D. | Isobaric |
| Answer» C. Isochoric | |
| 2. |
What is the ratio of speed of sound in air when measured after laplace correction to that measured by Newton’s formula? |
| A. | 1.18 |
| B. | 0.84 |
| C. | 1.4 |
| D. | 0.71 |
| Answer» B. 0.84 | |
| 3. |
The speed of sound in air is 330m/s. What is the mass of 1 mole of air? Assume it is an ideal gas. |
| A. | 28gm |
| B. | 38gm |
| C. | 20.56gm |
| D. | 29gm |
| Answer» D. 29gm | |
| 4. |
The formula v = √(P/ρ) can be used for any gas considering isothermal process. True or False? |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
Why is the speed of longitudinal waves sound in solids greater than that in liquids? |
| A. | Solids have lesser bulk modulus |
| B. | Gases have lesser density |
| C. | Solids have greater bulk modulus and density than gases but increase in bulk modulus dominantes over increase in density |
| D. | Gases don’t have lesser particles in a given volume and therefore transfer sound energy slowly |
| Answer» D. Gases don’t have lesser particles in a given volume and therefore transfer sound energy slowly | |
| 6. |
A string has a mass of 100gm & is under a tension of 10N. What should be its length if the speed of transverse waves is to be 10m/s on the string. |
| A. | 1.8m |
| B. | 10m |
| C. | 1m |
| D. | 2m |
| Answer» D. 2m | |
| 7. |
What is the expression for wave speed in the given equation: y = Asin(kx-wt + π)? |
| A. | dy/dt |
| B. | w/k |
| C. | 2πw/k |
| D. | 2πk/w |
| Answer» C. 2πw/k | |