NEET
- Exam
- NEET
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- Physics
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- Electromagnetic Waves
NEET · Physics · Electromagnetic Waves
Given below are two statements: one is labelled as Assertion (A)...
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Microwaves are not suitable for radar systems used in aircraft navigation.
Reason (R): Microwaves have shorter wavelengths compared to radio waves, allowing them to form narrow directional beams.
In the light of the above statements, choose the correct answer from the options given below:
Assertion (A): Microwaves are not suitable for radar systems used in aircraft navigation.
Reason (R): Microwaves have shorter wavelengths compared to radio waves, allowing them to form narrow directional beams.
In the light of the above statements, choose the correct answer from the options given below:
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A).
- BBoth (A) and (R) are true but (R) is not the correct explanation of (A).
- C(A) is true but (R) is false.
- D(A) is false but (R) is true.
Correct answer
D. (A) is false but (R) is true.
Step-by-step solution
Assertion (A) is false because microwaves are in fact extensively used in radar systems for aircraft navigation.
Reason (R) is true. Microwaves (short-wavelength radio waves) have wavelengths typically in the range of to , which are shorter than standard radio waves. This short wavelength reduces diffraction, allowing microwaves to travel as narrow, directional beams, making them highly suitable for radar applications.
Therefore, (A) is false but (R) is true.
Answer: (A) is false but (R) is true.
Reason (R) is true. Microwaves (short-wavelength radio waves) have wavelengths typically in the range of to , which are shorter than standard radio waves. This short wavelength reduces diffraction, allowing microwaves to travel as narrow, directional beams, making them highly suitable for radar applications.
Therefore, (A) is false but (R) is true.
Answer: (A) is false but (R) is true.