Question Discussion & Solution

The correct answer is Vivek Ram Chaudhari.

Key Points

• Air Marshal Vivek Ram Chaudhari has been named as the next Chief of Air Staff.
  • He succeeds Air Chief Marshal RKS Bhadauria who will retire from service in the end of September 2021.
  • Currently posted as the Vice Chief of Air Staff, the officer was commissioned into the fighter stream and has commanded a MiG 29 squadron and has experience of various types of aircraft including the SU 30MKI.

The correct answer is Majam.

• Majam river is a part of the Arabian sea drainage system.

Key Points

• Majam river is the tributary of the Sabarmati River.
• Sabarmati River:
  • It originates near the Aravalli ranges.
  • Its Tributaries are Hathmati, Meshwa, Betrak, Majam, Baval.

Additional Information

• Sabi river is also known as the Sahibi river.
  • It drains into the river Yamuna.
• Kuntal river is also known as the Kantli river and has inland drainage.
• Mej river is a tributary of the Chambal river.

Thus, ‘SEDATE’ can be coded as:

Number of persons between two different persons = Total number of persons – (position of person from left + position of persons from right)

Sum of positions of K & T from opposite ends = 23 + 28 = 51, i.e. less than the total number of students (<60)

Therefore, number of students between K & T = Total number of students - (position of K from left + position of T from right)

60 – (23 + 28) = 60 – 51 = 9

CONCEPT:

• Newton's first law states that an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by any external force.
• Newton's Second Law of motion states that the rate of change of momentum of an object is proportional to the applied force in the direction of the force i.e.,

​ \(F = \frac{{dp}}{{dt}}\)

Where F = force applied, m = mass of the body, and a = acceleration produced.

• Newton's Third Law of Motion states that 'To every action, there is an equal and opposite reaction'.

EXPLANATION:

• The launching of a rocket illustrates Newton’s third law of motion. Therefore the option 1 is correct.
• Newton's Third Law of Motion states that 'To every action, there is an equal and opposite reaction'.
• So, when the rocket is ignited, it releases gases from its thrusters thereby creating a force that will push rocket upwards and it can gain extreme velocity using this principle.

• Newton's third law of motion is applicable irrespective of the nature of the forces. The forces of action and reactions may be mechanical, gravitational, electric, or of any other nature.
• Action and reaction always act on different bodies. If they acted on the same body, the resultant force would be zero and there could never be accelerated motion.
• The forces of action and reaction cannot cancel each other. This is because action and reaction, though equal and opposite, always act on different bodies and so cannot balance each other.
• No action can occur in the absence of a reaction.