Optics Question 183

Question: Specific rotation of sugar solution is 0.01 SI units. 200 kgm3 of impure sugar solution is taken in a polarimeter tube of length 0.25m and an optical rotation of 0.4rad is observed. The percentage of purity of sugar is the sample is

[KCET 2004]

Options:

A) 80%

B) 89%

C) 11%

D) 20%

Show Answer

Answer:

Correct Answer: A

Solution:

Specific rotation (α)=θlcc=θαl=0.40.01×0.25=160kg/m3

Now percentage purity of sugar solution =160200×100=80



जेईई के लिए मॉक टेस्ट

एनसीईआरटी अध्याय वीडियो समाधान

दोहरा फलक