What will happen if intake of iodine in our diet is low?
Iodine is very essential for the synthesis of thyroxine hormone. Iodized salt contains potassium iodate, dextrose etc. which is necessary for our body. If the amount of iodine is less than the requirement, it may cause swelling up the neck.
Due to the deficiency of iodized salt, it may cause goitre disease and causes the enlargement of thyroid gland also known as hypothyroidism.
Find out, from Table 10.3, the medium having highest optical density. Also find the medium with lowest optical density.
| Material medium |
Refractive index |
Material medium |
Refractive index |
| Air | 1.0003 | Canada Balsam |
1.53 |
| Ice | 1.31 | ||
| Water | 1.33 | Rock salt | 1.54 |
| Alcohol | 1.36 | ||
| Kerosene | 1.44 | Carbon disulphide |
1.63 |
| Fused quartz |
1.46 | ||
| Turpentine oil |
1.47 | Ruby | 1.71 |
| Benzene | 1.50 | Sapphire | 1.77 |
| Crown glass |
1.52 | Diamond | 2.42 |
Table 10.3 Absolute refractive index of some material media
NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:
Welcome to the NCERT Solutions for Class 10 Science - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 41: What will happen if intake of iodine in our diet is low?....
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