JEE Main Important Physics formulas
ApplyAs per latest 2024 syllabus. Physics formulas, equations, & laws of class 11 & 12th chapters
Repeated addition of the same number is the basic principle of multiplication. Adding the same number, for example, 6+6+6=18 can be simplified using multiplication that is 6\times3=18
The number 74 is a composite number which means it is made up of the multiplication of two small positive integers and has one more factor than itself and 1. It is also an even number.
74 has four factors 1, 2, 37, and 74. Factors mean the number which can completely divide a number without any remainder
74 is not a prime number because to be named as a prime number, the number should only have two factors.
Roughly, It takes thirty-seven seconds to count from 1 to 74.
Q1. What is LCM of 5 and 15?
Ans: LCM( Least common multiple) means the least positive number that is divisible by a given set of numbers.
Here, the multiples of 5 are 5,10,15 …..
And the multiples of 15 are 15,30,45….. So, the LCM of 5 and 15 is 15.
02. What will be the cost of 5 motorcycles if each costs 200 rupees?
Ans: If the price of one motorcycle is 200. By using multiplication we can simply find out the price of 5 motorcycles. 5\times200=1000
So, the cost of 5 motorcycles will be 1000 rupees.
Q3. If Raj is trying to count chocolates in 3 boxes and each box contains 15 chocolates. What will be the fastest method to count the total number of chocolates?
Ans: To count the chocolates quickly and accurately, Raj can simply use multiplication instead of trying to count each chocolate. If one box contains 15 chocolates, then 3 boxes will have:
3\times15=45
Here, Raj has a total of 45 chocolates in 3 boxes.
Q4. Rohan walks 4 kilometres per day. How many kilometres can he walk in 45 days?
Ans: The number of kilometres Rohan walks per day is 4 kilometres
In 45 days, the number of kilometres Rohan walks will be
4\times45=180
Q5. How much money would you save in a month If you save 200 rupees per day?
Ans: There are 31 days in a month and if you save 200 rupees per day then the total savings will be
31\times200=6200
74 | × | 1 | = | 74 |
74 | × | 2 | = | 148 |
74 | × | 3 | = | 222 |
74 | × | 4 | = | 296 |
74 | × | 5 | = | 370 |
74 | × | 6 | = | 444 |
74 | × | 7 | = | 518 |
74 | × | 8 | = | 592 |
74 | × | 9 | = | 666 |
74 | × | 10 | = | 740 |
74 |
74+74=148 |
74+74+74+=222 |
74+74+74+74=296 |
74+74+74+74+74=370 |
74+74+74+74+74+74=444 |
74+74+74+74+74+74+74=518 |
74+74+74+74+74+74+74+74=592 |
74+74+74+74+74+74+74+74+74=666 |
74+74+74+74+74+74+74+74+74+74=740 |
If we use addition:- 74+74+74+74=296 and to simplify this we can use multiplication 74\times4=296
And we can see the same pattern in the table. Instead of adding the number 74 again and again we can simply multiply it by the number of times we need to add 74.
As per latest 2024 syllabus. Physics formulas, equations, & laws of class 11 & 12th chapters
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