Question Discussion & Solution

According to given conditions,

Clearly, the man is now facing West.

Hence, ‘West’ is the correct answer.

The correct answer is 8.

• 8 UNESCO World Heritage Sites are located in Rajasthan.

Key Points

• UNESCO World Heritage Sites in Rajasthan
  • Amber Fort
  • The Walled City of Jaipur
  • Keoladeo National Park
  • Jaisalmer Fort
  • Gagron Fort
  • Ranthambore Fort
  • Kumbhalgarh Fort
  • Chittorgarh Fort
  • Jantar Mantar

Confusion Points

• There are total UNESCO World Heritage Sites in Rajasthan 9 but this is the previous year's question paper as Walled City of Jaipur added in 2019.

Additional Information 

• UNESCO World Heritage Sites in India 
  • ​There is a total of 40 world heritage sites out of which 32 are cultural, 7 are natural and 1 is mixed in India till now.
  • The last added World Heritage site in India was The Walled city of Jaipur.

Concept:

In general, each object contains three object associated attributes:

• Object prototype: It is kind of reference/indication to another object from which properties are inherited.
• Object class: It is a kind of string which classifies the type an object.
• Object's extensible flag: It simply specifies that whether some new properties are added to the object

The correct answer is Cybersecurity.

Key Points

• Cryptography is a specialized area of Cybersecurity.
• Cryptography is also defined as the study of secure communications techniques that allow only the sender and intended recipient of a message to view its contents.
• It covers the obfuscation of information in images using techniques such as microdots or merging.
• It is used to protect the written documents.
• The main purpose of cryptography appears to be making content and images undecipherable, the true goal of cryptography in an information technology context is to ensure the confidentiality and integrity of any information technology system.

The correct answer is Concave.

Key Points

• Concave Mirror:-
  • If a hollow sphere is cut into parts and the outer surface of the cut part is painted, then it becomes a mirror with its inner surface as the reflecting surface.
  • This type of mirror is known as a concave mirror.
  • A concave mirror has a reflective surface that is curved inward and away from the light source.
  • Concave mirrors reflect light inward to one focal point.
  • Unlike convex mirrors, the image formed by a concave mirror shows different image types depending on the distance between the object and the mirror.
  • Torch lights, automobile headlights are examples of concave mirrors.
  • The mirror used by the dentists to see the teeth of the patients is also a Concave Mirror.
  • Uses of Concave Mirror:
  • Used in shaving mirrors, ophthalmoscope, astronomical telescopes, headlights, solar furnaces.

Additional Information

• Convex Mirror:-
  • If the cut part of the hollow sphere is painted from inside, then its outer surface becomes the reflecting surface.
  • This kind of mirror is known as a convex mirror.
  • A convex mirror is also known as a diverging mirror as this mirror diverges light when they strike its reflecting surface.
  • Virtual, erect, and diminished images are always formed with convex mirrors, irrespective of the distance between the object and the mirror.
  • A convex mirror is a diverging mirror in which the reflective surface bulges towards the light source.
  • They are not used to focus light as they reflect light outwards.
  • The image formed by convex mirrors is smaller than the object but gets larger as they approach the mirror.
  • Magnifying glasses, telescopes are examples of convex mirrors.
  • Uses of Convex Mirror: Inside buildings, Vehicle mirrors, Magnifying glass, Security purposes.
• Plane Mirror:-
  • A plane mirror is a flat, smooth reflective surface.
  • A plane mirror always forms a virtual image that is upright, and of the same shape and size as the object, it is reflecting.
  • A spherical mirror is a mirror that has a consistent curve and a constant radius of curvature.
  • The images formed by a spherical mirror can either be real or virtual.
  • Spherical mirrors are of two types:
    • Concave Mirror
    • Convex Mirror
  • Uses of Plane Mirror: Solar cookers, looking glass, scientific instruments, constructing periscope which is used in submarines, kaleidoscope, a toy which produces beautiful patterns, SLR camera to click photos.