MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Two vibrating springs of the same material but lengths L and 2L have radii 2r and r respectively. They are stretched under the same tension. Both the strings vibrate in their fundamental modes, one of the lengths L with frequency f1 and the other with frequency f2. The ration is given by? |
| A. | 2 |
| B. | 4 |
| C. | 8 |
| D. | 1 |
| Answer» E. | |
| 2. |
A wave represented by the equation y=acos(kx-ωt) is superposed with another wave to form a stationary wave such that point x=0 is a node. The equation for the other wave is? |
| A. | acos(kx-ωt) |
| B. | -acos(kx-ωt) |
| C. | -acos(kx+ωt) |
| D. | -asin(kx-ωt) |
| Answer» D. -asin(kx-ωt) | |
| 3. |
A travelling wave in a stretched string is described by the equation y = Asin(kx-ωt). The maximum particle velocity is ___________ |
| A. | Aω |
| B. | ω/k |
| C. | dω/dk |
| D. | x/t |
| Answer» B. ω/k | |
| 4. |
The extension in a string, obeying Hooke’s law, is x. The speed of sound in the stretched string is v. If the extension in the spring is increased to 1.5x, the speed of sound will be ___________ |
| A. | 1.22v |
| B. | 0.16v |
| C. | 1.50v |
| D. | 0.75v |
| Answer» B. 0.16v | |
| 5. |
Two monatomic ideal gases 1 and 2 of molecular masses M1 and M2 respectively are enclosed in separate containers kept at the same temperature. The ratio of the speed pf spund in gas 1 to that in gas 2 is given by? |
| A. | √(M1/M2) |
| B. | √(M2/M1) |
| C. | M1/M2 |
| D. | M2/M1 |
| Answer» C. M1/M2 | |