Question Discussion & Solution

CONCEPT:

• Frequency (f): The number of waves that pass a given point per second is called frequency.
  • The unit of frequency is vibration per second or Hertz.

• Time period (T): The time taken to complete one full oscillation or cycle by the Wave is called the time period.

  • The SI unit of the time period is second (s).

EXPLANATION:

• From the above table, it is clear that time is the physics quantity that has the same unit in both C.G.S and the M.K.S system.

The correct answer is Displacement.

Key Points

•  Displacement
  • When a body moves from one position to another, the shortest distance between the initial position and final position of the body along with direction is known as Displacement.
  • Its SI unit is a meter.
  • It is a vector quantity.
  • Displacement of the object can be positive, negative, zero.
  • Displacement of the object can never be greater than the distance traveled by it.
• When there is no change in an initial position and final position even after covering some path, then it is considered zero displacements.

Additional Information

• Distance
  • It is the actual path covered by a moving body irrespective of the direction in which the body travels.
  • Its SI unit is a meter.
  • It is a scalar quantity.
  • An odometer is used to measure the distance traveled by the vehicle.  
• Speed
  • The time rate of change of position of the object in any direction is called the speed of the object.
  • It is a scalar quantity.
  • Its SI unit is m/s.
  • Speed= Distance travelled/Time taken
• Frequency
  • It tells us how frequently an event occurs.
  • The number of complete waves produced in one second is called the frequency of the waves.
  • Hertz is the SI unit of Frequency. It is named in the honor of Rudolf Hertz.
  • 1 Hertz= 1 vibration per second.

The correct answer is Anirudh Singh.

Key Points

• Anirudh Singh-
  • He was the 15th king of Bundi state.
  • He was married to Rani Nathawat Ji.
  • He built 84 pillared cenotaphs, for his beloved nurse Deva.
  • He served Aurangzeb in the Deccan.
  • He was later transferred to the northwest under Prince Muazzam.

Additional Information

•  Surajmal-
  • He was the son of Narayan Das.
  • He killed Rana Sanga's elder son Ratan Singh at Aheriya festival.
• Ratan Singh-
  • He was made king of Bundi after Rav Bhoj.
  • Jahangir gave Ramraj title to him.
  • Due to Ratan Singh's painting love, Jahangir gave him Sir Bundray's title.
  • In his reign, Kota was separated from the Bundi state by Shahjahan.
• Veer Singh-
  • He built the Taragarh fort in Bundi.
  • Maharana Lakha attacked him.
  • Mahmood Khilaji attacked him three times

The correct answer is Payal Jangid.

• Payal Jangid has been awarded the 'Changemaker Award' by the Bill and Melinda Gates Foundation for the year 2019.

Key Points

• Bill and Melinda Gates Foundation:
  • Founded by Bill Gates and his wife Melinda Gates this organization help people lead healthy, productive lives.
  • In developing countries, the organization focuses on improving people's health and providing them with the chance to lift themselves out of hunger and extreme poverty.
  • Its headquarters is in Washington, USA.
  • Payal Jangid was awarded the 'Changemaker Award'  at Goalkeepers Global Goals Awards 2019.
    • She was awarded for her work towards the abolition of child marriage in her village.
  • Her mentors were Nobel Peace Laureate Kailash Satyarthi and child rights activist Sumedha Kailash.
  • Prime Minister Narendra Modi was honoured with the Global Goalkeeper award of 2019.

Additional Information

• Apurvi Singh Chandela is a shooting player and competes in 10m rifle events.

Thus, ‘SEDATE’ can be coded as: