NEET
- Exam
- NEET
- Subject
- Physics
- Chapter
- Waves and Sound
NEET · Physics · Waves and Sound
A wave is transmitted from a denser to rarer medium. Then, match...
A wave is transmitted from a denser to rarer medium. Then, match the following columns.
(
)
| Column I | Column II |
| (A) Frequency of wave | (p) Will increase |
| (B) Speed of wave | (q) Will decrease |
| (C) Wavelength of wave | (r) Will remain unchanged |
| (D) Amplitude of wave | (s) May increase or decrease |
Options
- A((\mathrm{A} \rightarrow \mathrm{p}, \mathrm{B} \rightarrow \mathrm{p}, \mathrm{C} \rightarrow \mathrm{r}, \mathrm{D} \rightarrow \mathrm{s}))
- B((\mathrm{A} \rightarrow \mathrm{s}, \mathrm{B} \rightarrow \mathrm{p}, \mathrm{C} \rightarrow \mathrm{q}, \mathrm{D} \rightarrow \mathrm{p}))
- C((\mathrm{A} \rightarrow \mathrm{r}, \mathrm{B} \rightarrow \mathrm{q}, \mathrm{C} \rightarrow \mathrm{p}, \mathrm{D} \rightarrow \mathrm{s}))
- D((\mathrm{A} \rightarrow \mathrm{r}, \mathrm{B} \rightarrow \mathrm{p}, \mathrm{C} \rightarrow \mathrm{q}, \mathrm{D} \rightarrow \mathrm{s}))
Correct answer
B. ((\mathrm{A} \rightarrow \mathrm{s}, \mathrm{B} \rightarrow \mathrm{p}, \mathrm{C} \rightarrow \mathrm{q}, \mathrm{D} \rightarrow \mathrm{p}))
Step-by-step solution
Frequency is the property of source. It remains unchanged.
In rarer medium, speed of wave is more.
Since,
(\begin{gathered}
\lambda=\frac{v}{f} \text{ or } \lambda \propto v \\
A_1=\left(\frac{2 v_2}{v_1+v_2}\right) A_i \\
v_2>v_1 \quad \therefore \quad A_i>A_i
\end{gathered})