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CBSE Class 8 Answered

Name the apparatus which is used to obtain a thin beam of light.  
Asked by anurag.kishore68 | 28 Jul, 2018, 08:06: AM
answered-by-expert Expert Answer
Ray box is used to get a desired beam of light. It has lamp of 12 V. 
Slits are used in order to get the single or multiple beams of light. 
Answered by Shiwani Sawant | 30 Jul, 2018, 11:21: AM
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