Question:
Gurmit wanted to perform an activity using a laser torch. Her teacher advised her not to do so. Can you explain the basis of the teacher’s advice?
Gurmit wanted to perform an activity using a laser torch. Her teacher advised her not to do so. Can you explain the basis of the teacher’s advice?
Updated On: Dec 5, 2023
Hide Solution
Verified By Collegedunia
Solution and Explanation
Intensity of laser beam is very high, as it carries large amount of energy. It is harmful for eyes and can cause permanent damage. One should not look at laser beam directly or indirectly for a longer period.
Was this answer helpful?
0
0
Top Questions on Care of the Eyes
Questions Asked in CBSE Class VIII exam
- Subtract 4p2q – 3pq + 5pq2 – 8p + 7q – 10 from 18 – 3p – 11q + 5pq – 2pq2 + 5p2q
- CBSE Class VIII
- Addition and Subtraction of Algebraic Expressions
- The process that you saw in Activity 11.7 is used for purification of copper. A thin plate of pure copper and a thick rod of impure copper are used as electrodes. Copper from impure rod is sought to be transfered to the thin copper plate. Which electrode should be attached to the positive terminal of the battery and why?
- CBSE Class VIII
- Electroplating
- Subtract 3xy + 5yz – 7zx from 5xy – 2yz – 2zx + 10xyz
- CBSE Class VIII
- Addition and Subtraction of Algebraic Expressions
- The floor of a building consists of 3000 tiles which are rhombus shaped and each of its diagonals are 45 cm and 30 cm in length. Find the total cost of polishing the floor, if the cost per m2 is Rs 4.
- CBSE Class VIII
- Area of a Polygon
- Suppose 2 kg of sugar contains 9 x 106 crystals. How many sugar crystals are there in (i) 5 kg of sugar? (ii) 1.2 kg of sugar?
- CBSE Class VIII
- Direct Proportion
View More Questions