Answer is D: Electronic microscope
An electronic microscope has greater resolving power and much higher magnifications. Most high-resolution electron microscope cannot be used to image living cells because the particle beam of powerful electrons used to illuminate a specimen also destroys the samples. Engineers, however, are coming up with ways to overcome this critical limitation by using quantum mechanical measurement. Quantum mechanical measurement will help avoid damage to the specimen by sensing objects remotely without ever hitting the imaged object.
It will normally result in rules that are more complex and more difficult to understand option (C) is correct.
<h3>What is tail recursion?</h3>
The recursive function is essentially used as the function's final statement in the tail recursion.
If we try to use tail-recursive rules to implement non-tail-recursive rules, it will normally result in rules that are
A. simpler and easier to understand.
B. circular rules.
C. more complex and more difficult to understand.
D. more time-consuming in execution.
The recursive function is essentially used as the function's final statement in the tail recursion. Therefore, tail recursion is what happens when nothing remains to be done after returning from the recursive function.
Thus, if we try to use tail-recursive rules to implement non-tail-recursive rules, it will normally result in rules that are more complex and more difficult to understand option (C) is correct.
Learn more about the tail recursion here
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Answer:
print("hello world")
Explanation:
a hello world program is simply a program that prints out hello world.
for this you would need to remember to have the same number of brackets on each side and to write print. Also remember when printing to include speech marks.
Answer:
void countUp(int num)
{
if(num==0) //base case.
return;
countUp(num-1);//Recursive call.
cout<<num<<" "; //printing the number.
}
for input num=25
Output:-1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Explanation:
I have used recursion to print the numbers the function is in c++ language.In every recursive call we are decreasing num by 1.As the base case is reached.Then it will backtrack from 1 to num and then we are printing while backtracking.
Answer:
The code will give an error that is "At least one public class is required in main file".
Explanation:
In the given code if we do not use the public access modifier to the class. It will give an error so, the correct code to this question as follows:
Program:
import java.util.HashSet; //import package
public class A //define class as public.
{
public static void main(String[ ] args) //define main method.
{
HashSet set = new HashSet(); //creating hashset object.
set.add("A"); //add alphabet in hashset
set.add("B"); //add alphabet in hashset
set.add("C"); //add alphabet in hashset
System.out.print("Size of HashSet is :"set.size()); //print the size of hashset.
}
}
Output:
Size of HashSet is : 3
Explanation of the program:
- In the above program, we define a public class that is "A" and inside the class, we define the main method.
- Inside the main method, we create a HashSet class object that is "set".
- To add elements in HashSet we use add() function that adds elements and in the last, we use the size() function that prints the size HashSet.
