Question Discussion & Solution

The correct answer is Mirage.

• To a distant observer, the light appears to be coming from somewhere below the ground.
• The observer naturally assumes that light is being reflected from the ground, say, by a pool of water near the tall object.
• Such inverted images of distant tall objects cause an optical illusion to the observer.
• This phenomenon is called a mirage.
•  The optical illusion which occurs mainly in the desert during hot summer is based on the principle of TIR i.e total internal reflection.
• This type of mirage is especially common in hot deserts.

Additional Information

• Total Internal Reflection (TIR): When a ray of light goes from denser to the rarer medium it bends away from the normal and as the angle of incidence in denser medium increases, the angle of refraction in the rarer medium also increases and at a certain angle, angle of refraction becomes 90°, this angle of incidence is called critical angle (C).
• When the Angle of incidence exceeds the critical angle then the light ray comes back into the same medium after reflection from the interface. This phenomenon is called Total internal reflection (TIR).
• Conditions for TIR: 
  1. The ray must travel from denser medium to rarer medium.
  2. The angle of incidence 'i' must be greater than the critical angle C.

The correct answer is Nahargarh Fort.

Key Points

• Nahargarh Fort:
  • It was built by the Kachwaha dynasty's Sawai Jai Singh in 1734 AD.
  • It is also known as Sudarshangarh Fort, which is the original name of Fort.
  • Its other names are- Jaipur's Crown, Palace's Fort, and Meethadi's Fort.
  • Sawai Madho Singh 2nd built 9 palaces for his 9 Paswan.
  • The name of Palaces are Suraj Prakash, Khushhal Prakash, Jawahar Prakash, Lalit Prakash, Chand Prakash, Anand Prakash, Lakshmi Prakash, Phool Prakash and Basant Prakash.
  • These Palaces were built in Victorian Style.

Additional Information

• Mawatha Lake is Situated In Amer Fort. 
  • it was built by Mirza Jai Singh in 1664 AD.

Given pair is profession: work place

Teacher work in school

Similarly, Astronomer works in Observatory.

For other options farmer works in field, Chef works in kitchen and Tailor works in Boutique no such combination is given except Astronomer who works in observatory.

Linen, Polyester and Rayon are types of clothing fibers or fabric, while Terracotta is a clay-like earthenware ceramic.

The correct answer is Yash Dhull.

Key Points

• Yash Dhull became only the third Indian batsman to score a century at the U19 World Cups.
• ICC Under 19 World Cup:
  • The ICC Under-19 Cricket World Cup is an international cricket tournament organized by the International Cricket Council (ICC).
  • It is contested by national under-19 teams.
  • The first edition was held in 1988, as the Youth World Cup.
  • It was not staged again until 1998. Since then, the World Cup has been held as a biennial event.
  • India has won the World Cup on a record 5th times and India is the most successful team.
  • After India, Australia has won 3 titles.
    • Format: 50 overs
    • First edition: 1988 (Australia)
    • Latest edition: 2020 (South Africa)
    • Next edition: 2022 (West Indies)
    • Number of teams: 16
    • Current champion:  Bangladesh (1st title)​ 

Additional InformationInternational Cricket Council:

• Predecessor: Imperial Cricket Conference (1909 - 1965), International Cricket Conference (1965 - 1989)
• Formation: 15 June 1909
• Headquarters: Dubai.
• Members: 106
• Chairman: Greg Barclay(New Zealand)
• Deputy Chairman: Imran Khwaja (Singapore).