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Science
10th
grade
Refraction Concave Lens | Light : Reflection and Refraction | Assessment | English | Grade 10
3 questions
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- 1. Multiple Choice
A ray of light after refraction does not changes its path when ______________ .
it is travelling parallel to the principal axis
it is passing through the optical centre of the lens
it is passing through the focus of the lens
may be 1 or 2
- 2. Multiple Choice
How many times the phenomenon of refraction takes place when a ray of light passes through a concave lens?
3
2
1
Can't be determined
- 3. Multiple Choice
A flashlight converges the light at a single point. What could be the reason behind this?
Battery of the flashlight might be drained
A convex lens might have used
A concave lens is used in the flashlights
Reflectors might be enhancing the light
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