Question Discussion & Solution

CONCEPT:

• Power: The rate of work done is called power.
  • It is denoted by P.
  • Mathematically it is written as

\(Power\;\left( P \right) = \frac{{\;W}}{{t}}\)

CALCULATION:

Given - mass of 1^st person (m₁) = 80 kg, mass of 2^nd person (m2) = 60 kg, time (t₁) = 12 sec, and time (t2) = 11 sec​

• The power to take an object to a certain height in 12 sec by 1^st person is 

\(\Rightarrow P_1 = \frac{mgh}{t}=\frac{80gh}{12}\)       ----(1)

• The power to take an object to a certain height in 11 sec by 2^nd person is 

\(\Rightarrow P_1 = \frac{mgh}{t}=\frac{60gh}{11}\)       ----(2)

On dividing equations 1 and 2, we get

\(\Rightarrow \frac{P_1}{P_2} =\frac{\frac{80gh}{12}}{\frac{60gh}{11}}=\frac{11}{9}\)

The correct answer is Kanhaiya Lal Sethiya.

• Kanhaiyalal Sethia was a well-known Rajasthani and Hindi poet born in Sujangarh, Churu District of Rajasthan.
  • His "Dharti Dhoran Ri" is recognized as the anthem song of Rajasthan throughout the world. 

Additional Information

• Chandra Prakash Deval is a Rajasthani poet and translator. He is also the convener of Rajasthani Advisory Council of Sahitya Akademi.
  • He has received Padma Shri in 2011, the fourth highest civil honour given by the Government of India.
• Dr Bhagwati Lal Vyas was awarded Bihari Puraskar in 2015 for his anthology of Rajasthani poems ‘Katha Sun Aawe Hai Sabad’ published in 2010.
• Vijaydan Detha, also known as Bijji, was a noted Indian writer of Rajasthani literature.
  • He was a recipient of several awards including the Padma Shri and the Sahitya Akademi Award.

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.

The correct answer is Bundi.

• 'Navlakha' lake is located in Bundi.

Key Points

• Other lakes in Bundi
  • Kanak Sagar
    • ​Several migratory birds can be seen here.
  • Naval Sagar
    • ​Nawal Sagar Lake is an artificial lake that is a major tourist attraction.
  • Jait Sagar
    • ​It is located close to the Taragarh Fort.

​Additional Information

• Naulakha Bawdi:
  • Naulakha Bawdi was built in 1586 AD.
  • It was built by Patrani Premal Devi of Maharawal Assochan.
  • This step-well is located in the Dungarpur district of Rajasthan.​​​​​​​
  • Facts related to the Naulakha 
    • Naulakha Mahal - Udaipur 
    • Naulakha Lake - Bundi 
    • Naulakha Burj - Chittorgarh 
    • Naulakha Bawdi - Dungarpur 
    • Naulakha Gate - Ranthambore 
    • Naulakha Temple - Pali

Stack

• It is a Last In First Out (LIFO) data structure
• Piles is another name used for stack since data element are placed one above the other and last element on the pile is the first one to be removed (LIFO)

• Push-down list: A list in which the next item to be removed is the item most recently stored (LIFO); Stack is a LIFO data structure
• The stack is used in situations where data have to be stored and then retrieved in reverse order.
• Real-life implementation of the stack is shown:

The ball which is stored last (D) will be the first one to be taken out of the container

Important Points

• Stacks data structures are also called FILO (first in last out)
• push(), pop(), peek() are some of the functions of stack data structure