The adrenal cortex is a vital gland that produces important hormones like cortisol, aldosterone, and androgens. Removal or dysfunction of the adrenal cortex leads to a condition known as Addison's disease, which can be fatal if untreated due to the lack of these critical hormones.
The testis produces testosterone and sperm, but its removal doesn't lead directly to death, though it can cause infertility.
The thyroid gland regulates metabolism through thyroid hormones. Although its removal leads to hypothyroidism, it is not immediately fatal as the condition can be managed with hormone replacement therapy.
The thymus gland is important for immune system development, especially in early life, but its removal does not directly result in death.
Conclusion: The removal of the adrenal cortex leads to death if not managed, which makes Option A the correct answer.
Match the LIST-I (Radiations) with LIST-II (Wavelength range):
\[
\begin{array}{|l|l|}
\hline
\textbf{LIST I (Radiations)} & \textbf{LIST II (Wavelength Range)} \\
\hline
A. \ \text{Gamma Rays} & I. \ 10^{-2} \ \text{meters to} \ 10^{-1} \ \text{meters} \\
B. \ \text{UV Rays} & II. \ >10^{1} \ \text{meters} \\
C. \ \text{Micro Waves} & III. \ 10^{-13} \ \text{meters to} \ 10^{-11} \ \text{meters} \\
D. \ \text{Radio Waves} & IV. \ 10^{-9} \ \text{meters to} \ 10^{-7} \ \text{meters} \\
\hline
\end{array}
\]
Choose the correct answer from the options given below:
Match the LIST-I (EEG Signals) with LIST-II (Frequency):
\[
\begin{array}{|l|l|}
\hline
\textbf{LIST I (EEG Signals)} & \textbf{LIST II (Frequency)} \\
\hline
A. \ \text{Alpha (} \alpha \text{)} & I. \ \text{0.5 - 4 Hz} \\
B. \ \text{Gamma (} \gamma \text{)} & II. \ \text{4 - 8 Hz} \\
C. \ \text{Delta (} \delta \text{)} & III. \ \text{8 - 13 Hz} \\
D. \ \text{Theta (} \theta \text{)} & IV. \ \text{22 - 30 Hz} \\
\hline
\end{array}
\]
Choose the correct answer from the options given below:
Match the LIST-I with LIST-II:
\[
\begin{array}{|l|l|}
\hline
\textbf{LIST I} & \textbf{LIST II} \\
\hline
A. \ \text{Parathyroid} & I. \ \text{Gonadotropin} \\
B. \ \text{Pancreas} & II. \ \text{Parathormone} \\
C. \ \text{Pineal Gland} & III. \ \text{Insulin} \\
D. \ \text{Placenta} & IV. \ \text{Melatonin} \\
\hline
\end{array}
\]
Choose the correct answer from the options given below:
Two concentric thin circular rings of radii 50 cm and 40 cm each, carry a current of 3.5 A in opposite directions. If the two rings are coplanar, the net magnetic field due to the two rings at their centre is: