Match the following SAR sensors to their frequency bands:
\[
\begin{array}{|c|l|c|l|}
\hline
\textbf{Column I} & \textbf{SAR Sensor} & \textbf{Column II} & \textbf{Frequency Band} \\
\hline
P & \text{NOVASAR} & 1 & \text{X-BAND} \\
Q & \text{RISAT-1} & 2 & \text{C-BAND} \\
R & \text{TERRASAR} & 3 & \text{L-BAND} \\
S & \text{ALOS PALSAR} & 4 & \text{S-BAND} \\
\hline
\end{array}
\]
\[ \begin{array}{|c|l|c|l|} \hline \textbf{Column I} & \textbf{SAR Sensor} & \textbf{Column II} & \textbf{Frequency Band} \\ \hline P & \text{NOVASAR} & 1 & \text{X-BAND} \\ Q & \text{RISAT-1} & 2 & \text{C-BAND} \\ R & \text{TERRASAR} & 3 & \text{L-BAND} \\ S & \text{ALOS PALSAR} & 4 & \text{S-BAND} \\ \hline \end{array} \]
Show Hint
- P–3, Q–2, R–4, S–1
- P–4, Q–2, R–1, S–3
- P–2, Q–4, R–1, S–3
- P–1, Q–4, R–3, S–2
The Correct Option is B
Solution and Explanation
RISAT-1 operates in the C-BAND \( \Rightarrow \) Q–2
TERRASAR operates in the X-BAND \( \Rightarrow \) R–1
ALOS PALSAR operates in the L-BAND \( \Rightarrow \) S–3
So, the correct mapping is:
P–4, Q–2, R–1, S–3
Top Questions on Waves
- In an open organ pipe \( \nu_3 \) and \( \nu_6 \) are 3rd and 6th harmonic frequencies, respectively. If \( \nu_6 - \nu_3 = 2200\ \text{Hz} \), then the length of the pipe is _________ mm. (Take velocity of sound in air as \(330\ \text{m s}^{-1}\).)
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- The fifth harmonic of a closed organ pipe is found to be in unison with the first harmonic of an open pipe. The ratio of lengths of closed pipe to that of the open pipe is \( \frac{5}{x} \). The value of \( x \) is ________.
Two loudspeakers (\(L_1\) and \(L_2\)) are placed with a separation of \(10 \, \text{m}\), as shown in the figure. Both speakers are fed with an audio input signal of the same frequency with constant volume. A voice recorder, initially at point \(A\), at equidistance to both loudspeakers, is moved by \(25 \, \text{m}\) along the line \(AB\) while monitoring the audio signal. The measured signal was found to undergo \(10\) cycles of minima and maxima during the movement. The frequency of the input signal is _____________ Hz.
(Speed of sound in air is \(324 \, \text{m/s}\) and \( \sqrt{5} = 2.23 \))
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Questions Asked in GATE GE exam
Eight students (P, Q, R, S, T, U, V, and W) are playing musical chairs. The figure indicates their order of position at the start of the game. They play the game by moving forward in a circle in the clockwise direction.
After the 1st round, the 4th student behind P leaves the game.
After the 2nd round, the 5th student behind Q leaves the game.
After the 3rd round, the 3rd student behind V leaves the game.
After the 4th round, the 4th student behind U leaves the game.
Who all are left in the game after the 4th round?
The following figures show three curves generated using an iterative algorithm. The total length of the curve generated after 'Iteration n' is:
Here are two analogous groups, Group-I and Group-II, that list words in their decreasing order of intensity. Identify the missing word in Group-II.
Abuse \( \rightarrow \) Insult \( \rightarrow \) Ridicule
__________ \( \rightarrow \) Praise \( \rightarrow \) Appreciate
- Had I learnt acting as a child, I ________ a famous film star.
Select the most appropriate option to complete the above sentence. The 12 musical notes are given as \( C, C^\#, D, D^\#, E, F, F^\#, G, G^\#, A, A^\#, B \). Frequency of each note is \( \sqrt[12]{2} \) times the frequency of the previous note. If the frequency of the note C is 130.8 Hz, then the ratio of frequencies of notes F# and C is: