Question Discussion & Solution

Concept:

Polymorphism is a feature of OOPs that allows the object to behave differently in different conditions. 

Explanation:

In C++ we have two types of polymorphism:
1. Compile-time Polymorphism – This is also known as static (or early) binding.
2. Runtime Polymorphism – This is also known as dynamic (or late) binding.

Compile-time Polymorphism
Function overloading and Operator overloading are examples of Compile time polymorphism.

Explanation:

• Sound is a longitudinal mechanical wave that propagates by making compressions (high pressure) and rarefactions(low pressure) in its propagating medium. 

• The amplitude of wavelength is the maximum distance the particle oscillating moves from the mean position.
• The frequency of the wave is the number of times one complete cycle of compressions 

• More the frequency more is the pitch of the sound, the sound is having more shrillness. 
• The more the amplitude the more is the loudness of the sound. 

So, loudness depends upon the amplitude.

Important Points 

• The Pitch of the sound depends upon frequency. 
• Mathematically, loudness is directly proportional to the square of the amplitude. 

L ∝ A2

The correct answer is Tinder.

• Tinder
  • Tinder is an American geosocial networking app.
  • It allows users to swipe to like or dislike other profiles based on their photos and common interests. 

​Additional Information

• Microsoft Edge
  • Microsoft Edge is a cross-platform web browser developed by Microsoft.
  • It was first released for Windows 10 and Xbox One in 2015.
  • Then for Android and iOS in 2017, for macOS in 2019, and as a preview for Linux in October 2020.
  • Edge includes integration with Cortana and has extensions hosted on the Microsoft Store.
• Mozilla Firefox
  • Mozilla Firefox, or simply Firefox, is a free and open-source web browser.
  • It was developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation.
• Internet Explorer 
  • ​Internet Explorer is a series of graphical web browsers developed by Microsoft and is included in the Microsoft Windows line of operating systems, starting in 1995.
  • It was first released as part of the add-on package Plus.

The Correct Answer is "Cache Memory".

Important Points

Cache Memory :

• Cache Memory is a special very high-speed memory.
• It is used to speed up and synchronizing with a high-speed CPU. Cache memory is costlier than main memory or disk memory but economical than CPU registers.
• Cache memory is an extremely fast memory type that acts as a buffer between RAM and the CPU.
• It holds frequently requested data and instructions so that they are immediately available to the CPU when needed.
• Cache memory is used to reduce the average time to access data from the Main memory.

Additional Information

Secondary Memory​ :

• It is non-volatile, i.e. it retains data when power is switched off.
• It is large capacities to the tune of terabytes.
• It is cheaper as compared to the primary memory.
• Depending on whether the Secondary memory device is part of the CPU or not, there are two types of secondary memory – fixed and removable.

 Auxiliary Memory :

• Auxiliary memory is the non-volatile memory lowest-cost, highest-capacity, and slowest-access storage in a computer system.
• It is where programs and data kept for long-term storage or when not in immediate use.
• Such memories tend to occur in two types-sequential access (data must access in a linear sequence) and direct access (data may access in any sequence).
• The most common sequential storage device is the hard disk drives, whereas direct-access devices include rotating drums, disks, CD-ROMs, and DVD-ROMs.
• It used as permanent storage of data in mainframes and supercomputers.

Virtual Memo :

• A computer can address more memory than the amount physically installed on the system.
• This extra memory is actually called virtual memory and it is a section of a hard disk that's set up to emulate the computer's RAM.
• The main visible advantage of this scheme is that programs can be larger than physical memory.
• Virtual memory serves two purposes.
  • First, it allows us to extend the use of physical memory by using the disk.
  • Second, it allows us to have memory protection because each virtual address is translated to a physical address.

The given group is all the Forms of energy. Leaping frog is mechanical energy, melting ice cream is thermal energy, and Radio wave is a type of Electromagnetic energy.

Out of the given alternatives lightning is a type of electrical energy.