What is the nature of the image formed on the retina of the human eye?
The image formed on the human retina is smaller and inverted. This occurs because the eye's lens converges light rays to form a real image on the light-sensitive retina, which is then processed by the brain to perceive objects in their correct orientation.
P, Q and R together started a business. Four times the investment of P equals five times the investment of Q and the capital of Q is twice that of R. Fi...
The ratio of the two numbers is 4:7. 110% of the first number is equal to the 80% of the second number. Find the sum of both the numbers.
If 3 kg of metal, of which 1/4 is aluminium and the rest is magnesium, be mixed with 5 kg of metal, of which 1/3 is aluminium and the rest is magnesium,...
The cost of diamond varies directly as the square of its weight. A diamond broke into four pieces with weights in the ratio 3 : 4 : 5 : 6. if the loss i...
The ratio between two numbers is 7:8. If each number is increased by 9, the ratio between then become 10:11, find the difference between numbers.
If a:(b+c) =3:9 and c:(a+b) =10:14 then find the value of b:(a+c)?
The ratio between the number of males and females in a college is 25: 26. If the number of males increases by 20% and the number of females increases by...
There are some assistants and officers in an office, if 12 assistants leave then there are 2 officers for each assistant. After this again 36 officers g...
If a/b =c/d =e/f =2/3 Then (2a2-3c2+4e2)/ (2b2-3d2+4f2) =?
Marks scored by A and B in a test are in the ratio 13:9 respectively. If B had scored 8 more marks, then marks scored by A would be 30% more than that o...
