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Start learning 50% faster. Sign in nowThe primary radiation that is initially produced within a fluorescent lamp is analogous to that emitted by a low pressure mercury lamp. Fluorescent lamps produce UV radiation by ionizing low-pressure mercury vapour. A phosphorescent coating on the inside of the tubes absorbs the UV and converts it to visible light.
A milkman mixed milk and water in an empty container in the ratio 12:7. The quantity of milk mixed was bought by the milkman at the rate of Rs. 37/litre...
A mixture contains ‘X’ liter milk and ‘Y’ liter water. If 30 liter of mixture is taken out and replaced with water, then the quantity of milk an...
A 65-litre mixture contains only water and oil in the ratio 3:2, respectively. If 35 litres of the mixture is replaced with the same quantity of oil, th...
A container contains Alcohol and water in ratio of 7:3 and Capacity of Container is 80 lit. If half of the Container is replaced with 13 lit of water th...
A vessel is completely filled with milk. If 57% of the milk is replaced with water then only 86 ml of milk will be left in the vessel. What is the total...
In a container containing 120 liters of pure petrol, 40 liters of petrol are drawn and replaced with the same quantity of diesel. This process is repeat...
A mixture contains 70 litres of milk and the rest water such that the ratio of the quantity of milk to that of water in the mixture is 7:3. How many lit...
160 ml of mixture A containing milk and water in the ratio of 3:2 respectively is mixed with another 160 ml of mixture B containing milk and water in th...
Mixture 'A' has only petrol and diesel in the ratio 5:4 respectively and mixture 'B has only petrol and diesel in the ratio 3:2 respectively. Mixtures '...
A 250 litres mixture contains milk and water in the ratio 4:1 respectively. If 20% of the mixture is replaced with the same quantity of water, then find...
