In the following question from statement-1 (Assertion) is...

In the following question from statement-1 (Assertion) is followed by statement-2 (Reason) Each question has the following four choice out of which only one choice is correct (a) Statement- 1 is true, statement $-2$ is true. Statement- 2 is a correct explanation for statement $-1 .$ (b) Statement-1 is true, statement-2 is true, statement-2 is not a correct explanation for statement-1. (c) Statement- 1 is true, statement $-2$ is false (d) Statement- 1 is false, statement $-2$ is true. Statement-1 :- Micro waves and not radio waves are used in satellite communication. Statement-2 :-The wavelength of microwaves is much shorter than that of radio waves. Hence micro wave do not disperse or diffract like radio waves. (A) a (B) $\mathrm{b}$ (C) $\mathrm{c}$ (D) d

In the following question from statement-1 (Assertion) is followed by statement-2 (Reason) Each question has the following four choice out of which only one choice is correct
(a) Statement- 1 is true, statement $-2$ is true. Statement- 2 is a correct explanation for statement $-1 .$
(b) Statement-1 is true, statement-2 is true, statement-2 is not a correct explanation for statement-1.
(c) Statement- 1 is true, statement $-2$ is false
(d) Statement- 1 is false, statement $-2$ is true.
Statement-1 :- Micro waves and not radio waves are used in satellite communication. Statement-2 :-The wavelength of microwaves is much shorter than that of radio waves. Hence micro wave do not disperse or diffract like radio waves.
(A) a
(B) $\mathrm{b}$
(C) $\mathrm{c}$
(D) d

Key Concepts

Microwave and Radio Wave Differences

This concept focuses on the distinctions between microwaves and radio waves, primarily their wavelength and frequency differences. Microwaves have shorter wavelengths compared to many radio waves, which affects their behavior such as reduced diffraction and improved directivity. These differences are pivotal in determining their suitability for certain applications, including satellite communication.

Wave Properties

This concept covers the fundamental attributes of waves, including wavelength, frequency, and energy. These properties determine how waves interact with obstacles and media, influencing phenomena like diffraction and dispersion, which are critical considerations in designing communication systems.

Satellite Communication

Satellite communication involves using satellites to relay signals over long distances on Earth. It relies on selecting appropriate frequencies from the electromagnetic spectrum (often microwaves) that minimize signal loss and interference, ensuring reliable data transmission between ground stations and satellites.

Electromagnetic Spectrum

This is the entire range of electromagnetic radiation, from radio waves to gamma rays. Each segment of the spectrum has unique characteristics such as wavelength and frequency that make it suitable for different applications, such as communication, medical imaging, or energy transmission.

Assertion-Reason Questions

This concept involves a two-part question format where a statement (assertion) and its explanation (reason) are provided. The examinee must assess the truth of both statements and determine whether the reason correctly explains the assertion. It tests not only factual knowledge but also logical reasoning and the ability to connect concepts.

Transcript

Please give Ace some feedback