lumen
/ˈluːmen/noun
उच्चारण लूमेन
ल्यूमेन (प्रकाश की मात्रा मापने की इकाई)
Advanced wordPYP · asked 1 time
Asked in previous papers
as one-word substitution
SSC CHSL Pre 2022
noun
- 1
[C] technical
(physics) a unit for measuring the amount of light given out by a source
ल्यूमेन (प्रकाश की मात्रा मापने की इकाई)
- This LED bulb gives 800 lumens of light.
- Check the lumens, not the watts, when buying a bulb.
- One lumen is the light flowing out of a source in a certain angle.
+ 2 more examples
- A brighter lamp usually has more lumens.
- The physics teacher asked us to define the lumen.
- 2
[C] technical
(anatomy) the space inside a tube in the body, such as a blood vessel or the gut
(शरीर की नली के भीतर की) गुहा, ल्यूमेन
- Fat deposits can narrow the lumen of an artery.
- Doctors inserted a thin tube into the lumen of the vein.
- The blood flows through the lumen of the artery.
+ 2 more examples
- A clot had blocked the lumen of the tube.
- The lumen is the hollow space inside the intestine.
✓In the exam
General knowledge
The brightness of a bulb is measured in lumens, while the power it uses is measured in watts.
किसी bulb की चमक lumens में मापी जाती है, जबकि उसकी बिजली की खपत watts में मापी जाती है।