Question Discussion & Solution

CONCEPT:

• Power is the ability to bend light and it is equal to the reciprocal of the focal length of the lens/mirror in meters.

Power (P) = 1/f

Where f is the focal length of the lens/mirror.

EXPLANATION:

As explained above, Dioptre is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres.

And since the S.I unit of the focal length is the meter (m).

So the S.I unit of power = 1/(SI unit of focal length) = m-1 = Dioptre (D).

1 m-1 = 1 D

The correct answer is In 1960.

• In 1960, the 'State Assessment Organization' was established in Rajasthan.

Key Points

• The State Evaluation Organisation was set up in the State on 1^st April 1960.
• It was set up with the objective of undertaking evaluation of Panchayati Raj and Community Development Programme, and further assigned the task of making an evaluation of development schemes/ projects initiated under different Five Year Plans.
• Presently it is working as an integral part of the State Planning Machinery and conduct the evaluation studies on various subjects, schemes, projects and programmers as required by the State Government as well as by the Central Government.

Concept:

• Viscosity: It is a property of a fluid to oppose relative motion between its layer.
  • The coefficient of viscosity is “η“ and dimension is [ ML^-1T^-1].
• Kinetic Viscosity: It is a measure to the inherent resistance of the of a fluid to flow when no external force is acted expect gravity.
  • Kinetic Viscosity = coefficient of viscosity / fluid mass density
  • V = η / ρ

Explanation:

• Dimensional formula of viscosity is [ ML^-1T^-1].

The correct answer is option 4.

Concept:

CPU Scheduling is a process of determining which process will own CPU for execution while another process is on hold. All Cpu scheduling algorithms use various parameters which are,

Arrival Time: Time at which the process arrives in the ready queue.

Schedule time: Time at which the process arrives ready to running state.

Completion Time: Time at which the process arrives running to terminate state.

Burst Time:  Time spends the process running state.

Turn Around Time:

Turn Around Time= Completion Time – Arrival Time.

Waiting Time:

Waiting time is the total time spent by the process in the ready state waiting for the CPU.

Response time:

Response time is the difference between first execution time and Arrival time.

CPU utilization:

CPU utilization refers to a computer's usage of processing resources or the amount of work handled by a CPU.

Throughput:

Throughput is the amount of work completed in a unit of time.

Throughput = no .of process completed / time taken.

Hence the correct answer is A, B, C, and D.

Deletion takes place at the FRONT of the queue.

96 is the largest element in the given queue.

1^st deque operation:

28 is deleted

2^nd deque operation:

15 is deleted

3^rd operation:

19 is deleted

4^th operation:

68 is deleted

5^th operation:

96 is deleted