Question
Bolometer is used to measure
–Solution
A bolometer is a device for measuring the power of incident electromagnetic radiation via the heating of a material with a temperature-dependent electrical resistance. IL was invented in 1878 by the American astronomer Samuel Pierpont Langley. A bolometer consists of an absorptive element, such as a thin layer of metal, connected to a thermal reservoir (a body of constant temperature) through a thermal link.
A bag contains certain number of coins of different denominations. The ratio of the number of Rs. 1 coins to Rs. 2 coins is 4 : 5, respectively and the...
The ratio of investment of A and B is 2 : 5 and that of B and C is 3 : 7. Find the investment of B if sum of investment of A, B and C is Rs. 33600.
In a clothing store, the ratio of shirts to trousers to T-shirts is 2:6:5. After Y trousers are sold, the ratio of shirts to trousers changes to 4:9. Th...
A starts a business with Rs. 5650. After 8 months, B joins with A as his partner. After one year the profit is divided in the ratio 5:8. What is B&rsquo...
In a store, there is an inventory of 4,800 caps. Black caps constitute 41(2/3) % of this total, with the rest being blue caps. The caps that have been s...
Three numbers ‘A’, ‘B’ and ‘C’ are such that ‘A’ is half of ‘B’ and ‘C’ is equal to average of ‘A’ and ‘B’. If sum of th...
If 'A' = (2/5) of 'B', 'B' = (3/4) of 'C', then find the value of (A + B) :(B + C) .
Adarsh rented a travel bike for a mountain tour. If the bike is rented for 8 hours or less, the charge is Rs. 100 per hour or Rs. 8 per km, whichever is...
The ratio between the number of books and pencils is 7:5 and the ratio of cost of per book and pencil is 3:2 then find the percentage by which total cos...
Determine the mean proportion of 40 and 19.6
