Question

In the following questions, a statement of assertion followed by the reason is given. Choose the correct answers out of the following choices:

Assertion: X-rays are generally used to clean parts located in hard-to-reach places.

Reason: Ultrasonics are low-frequency waves.

• A. Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.
• B. The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.
• C. Assertion is true but the Reason is false.
• D. The statement of the Assertion is false but the Reason is true.
• E. Both the statements are false.

Answer 1

The correct option is E

Both the statements are false.

1. X-Rays are a form of electromagnetic radiation.
2. They are powerful waves having a short wavelength and a large frequency of electromagnetic energy.
3. Most of them have a short wavelength ranging from 0.01 to 10 nanometers, corresponding to the high frequencies.
4. X-rays are generally used to examine the parts of the body wherein its hard-to-reach places.
5. Reason: Ultrasonics are not low-frequency waves.
6. Ultrasonics are high-frequency waves having a velocity more than the velocity of sound.
7. They are inaudible to the human ear.
8. Thus, Both statements are false.
9. Thus, option E is correct.