Class 7 Science MCQs - Chapter 4
Dispersion of Light Quiz Questions & Answers PDF Download - 23
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Dispersion of Light Exam Questions and Answers PDF Download: Test 23
'Prisms' with total internal reflection are used in
- telescopes
- glasses
- mirrors
- side mirrors of cars
The waves at the bottom of spectrum are
- infrared waves
- gamma-rays
- x-rays
- ultraviolet rays
Unlike sound, light depends on
- source
- vibrations
- frequency
- amplitude
The objects that do not produce their own light are known as
- luminous objects
- non luminous objects
- opaque objects
- translucent objects
The speed of light in soda-lime glass is
- 100,000 km/s
- 150,000 km/s
- 200,000 km/s
- 250,000 km/s
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