Physics · Light
'X' is an optical device which is used to see around corners or obstacles and is based on the principle of 'Y'. Here, X and Y respectively are:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Periscope, reflection✓
- 2Kaleidoscope, refraction
- 3Telescope, reflection
- 4Periscope, dispersion
Correct answer
Periscope, reflection
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