Question Discussion & Solution

The diagram that best represents the relationship among Sun, Moon and Universe:

Both the Sun and Moon belong to the universe.

Hence, ‘option 2’ is the correct answer.

The correct answer is Gold.

• Gold is not found in the Chota Nagpur Plateau.

Key Points

• Chhota Nagpur Plateau:
  • Chotanagpur plateau represents the north-eastern projection of the Indian Peninsula.
  • Chhota Nagpur plateau has an abundance of mineral resources such as mica, bauxite, copper, limestone, iron ore and coal.

Additional Information

• Gold in India is found in Karnataka and Uttar Pradesh. 

The correct answer is Viceroy Curzon.

Key Points

• Lord Curzon:
  • ​He served as Governor-General of India from 1899 to 1905.
  • He passed the Calcutta Corporation Act in the year 1899.
  • According to the act, it increased the number of official members and decreased the strength of elected official members.
  • As official members were mostly British Subjects it caused resentment in the Indian public.
  • He was the Viceroy who passed a law for protecting Ancient Indian monuments.
  • He passed the law in 1904 made the destruction of Ancient Monuments an offence and directed officials to collect and preserve ancient monuments.
  • British viceroy in India, Lord Curzon, carried out Partition of Bengal, (1905) despite strong Indian nationalist opposition.

Additional Information

• The Partition of Bengal was announced on 19 July 1905 by the then Viceroy Lord Curzon.
  • And was implemented on 16 October 1905
  • However, in 1911 it was withdrawn by Lord Hardinge.
• The stated reason was to ease the administration.
  • But the actual reason was to weaken the growing nationalism in Bengal and break the unity.
• As per Curzon, after the partition, the two provinces would be Bengal (including modern West Bengal, Odisha, and Bihar) and Eastern Bengal and Assam.
• Annulment of Bengal:
  • The partition of Bengal was annulled in 1911 by Lord Hardinge.
  • The capital of British India was moved to Delhi from Calcutta in 1911.
  • Despite the annulment, the partition already succeeded in making a communal divide between Muslims and Hindus of Bengal.

Total number of sarees = 40

Code number written on the 16^th saree = 85091

Code number written on the 29^th saree = 85091 + (29 – 16) = 85091 + 13 = 85104

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.