Question
A beam of light consisting of two wavelengths, 600 nm
and 420 nm, is used to obtain interference fringes in a Young’s double-slit experiment. Find the distance of the third bright fringe on the screen from the central maximum for wavelength 600 nmSolution
Meera had Rs. 3500 with her. She invested Rs. ‘c’ at 14% p.a. simple interest for 6 years and the remaining sum at 20% p.a. compound interest, compo...
A man invested a certain amount of sum at 12.5% per annum simple interest and earned an interest of Rs.2700 after 3 years. If the same amount is investe...
- The amount of simple interest earned on ₹4080 at an annual rate of 7.5% for t years is compared to the simple interest earned on ₹3250 at an annual rat...
A deposited Rs. 7500 at 20% per annum compound interest in scheme A for 3 years. After 3 years, he deposited total amount at 25% simple interest per ann...
A sum of Rs. 100 is invested at 10% per annum compound interest (compounded annually) for two years. How much interest will be received after two years?
A sum of ₹12,000 is invested at a certain rate of simple interest for 3 years. If the total interest earned at the end of 3 years is ₹2,160, find th...
The difference between the compound interest compounded annually and simple interest on a sum at 10% p.a. for 2 years is Rs. 210. Find the sum.
Anil borrowed Rs.10000 on CI at the rate of 20% for three years. He paid at the end of first year (1/8)th of amount and end of second year (1/6)th of am...
A sum of Rs.80 is lent to be returned in 90 months installments of Rs.10 each, interest simple. The rate of interest is: -
Investor V placed Rs. (a + 3000) in a compound interest account with an annual interest rate of r%, compounded annually for a span of 2 years. Simultane...
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