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Science
10th
grade
Refraction : Convex Lens | Light : Reflection and Refraction | Assessment | English | Grade 10
4 questions
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- 1. Multiple Choice
The image formed by a convex lens is highly diminished, real and inverted in nature. Where the object would have been placed?
At 2F₁
At Infinity
At F₁
Between 2F₁ and F₁
- 2. Multiple Choice
Which of the following is not the characteristic of a lens?
It refracts light
It is made of two refracting surfaces
It works on the laws of reflection
It has two focus
- 3. Multiple Choice
The projector of your lab is not working properly. It is not converging the image on the wall. What would have been missing in the projector?
Concave lens
Convex Mirror
Concave Mirror
Convex Lens
- 4. Multiple Choice
The focal length of the convex lens is 20 cm. What will be the sum of the distances of 2F₂, F₁ taken from optical centre?
40 cm
20 cm
60 cm
80 cm
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