A ray of light is incident on a refracting surface AB of a glass prism, kept in air, and emerges out of the other refracting surface AC. Consider the following statements:
(a) The angle of refraction at surface AB is less than the angle of incidence.
(b) The angle of refraction at the surface AC is more than the angle of incidence.
Which of the above statements is/are correct?
This question is based on the five, three-digit numbers given below.
(Left) 429 847 922 213 757 (Right)
(Example: 697 – first digit = 6, second digit = 9, third digit = 7)
NOTE: All operations to be done from left to right.
If all the numbers are arranged in descending order, the position of how many numbers will remain unchanged?
Two numbers are in the ratio 2 : 7. If the first number is increased by 14 and the second number is decreased by 6, then the ratio becomes 4 : 3. What is the sum of the original two numbers?
A trader gives 5% discount on the marked price of an article and gives 2 articles free for buying 14 articles and gains 33% in the entire transaction. Assuming a customer pays for 14 articles, the marked price of an article is what percent more than its cost price?
A statement is given followed by two assumptions numbered I and II. You have to assume everything in the statement to be true and decide which of the assumptions is/are implicit in the statement.
Statement:
Increase in the tax rates will hurt the pockets of the salaried middle class.
Assumptions:
I. Increase in the prices of goods will hurt the poor too.
II. The middle class will reduce their extra expenditure to save money.
