The fundamental principle utilized in an optical endoscope, which allows doctors to examine the inside of the human body, is: MCQ with Answer and Explanation
The fundamental principle utilized in an optical endoscope, which allows doctors to examine the inside of the human body, is:
A. Scattering of light
B. Diffraction of light
C. Total internal reflection of light
D. Polarization of light
Answer: Option C
Solution (By JKSSB Mock Tests)
Endoscopes consist of bundles of flexible optical fibers. Light introduced at one end is trapped inside the fiber core because it repeatedly strikes the boundary at an angle greater than the critical angle. This Total Internal Reflection allows light and visual images to be transmitted through complex, curving paths inside the body.
Explanation:
Higher pressure raises boiling point, so water can reach temperatures above 100°C, cooking food faster. At high altitudes, pressure cooker compensates for lower atmospheric pressure.
Explanation:
U ∝ V². If V' = 2V, U' = 4U. Energy scales with square of voltage. Memory aid: 'Capacitor energy: U ∝ V²; double voltage ⇒ quadruple energy'. Electrostatics proportionality frequently tested in competitive exams.
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