Allied & ICAR Exam Bank • ALLIED_0912 NAT • 2 Marks

Section 5: Irrigation and Drainage Engineering

Soil-Water-Plant Relationship

Subtopic: Soil-Water-Plant Relationship

Question Statement:

The propagation velocity of an electromagnetic pulse in a TDR probe is $v = \frac{c}{\sqrt{\epsilon_b}}$, where speed of light in vacuum is $c = 3.0 \times 10^8\text{ m/s}$. For an apparent dielectric permittivity $\epsilon_b = 16$ (so $\sqrt{\epsilon_b} = 4$), the wave velocity $v = \frac{3.0 \times 10^8}{4}$ in $10^7\text{ m/s}$ is:

Answer Key:

7.5

Step-by-Step Solution & Explanation

$v = \frac{3.0 \times 10^8}{4} = 0.75 \times 10^8\text{ m/s} = 7.5 \times 10^7\text{ m/s}$.
← Previous (ALLIED_0911) Next (ALLIED_0913) →

Practice In Authentic CBT Exam Interface

Test your skills under authentic timed conditions with live scoring and AIR percentile ranking.

Launch CBT Mock Test