Guess Paper(Physics) First Year Ch#04

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MCQ’S

1-______is a payer of rock holding water that allows water to percolate:

         A.      Earth

         B.      Sun

         C.      Aquifer

         D.      None

2-The value of solar constant is:

         A.      1.5 kWm^-2

         B.      1.4 * 10⁴ kWm^-2

         C.      1.4 kWm^-2

         D.      1.6 kWm^-2

3-For cloudy environment electric energy is stored in:

         A.      Plabium batteries

         B.      Nickel plabium batteries

         C.      Nickel cadium batteries

         D.      None of these

4-We get Tidal energy from:

         A.      Earth

         B.      Moon

         C.      Sun

         D.      Earthquakes

5-The escape velocity of mercury is:

         A.      2.4 kms^-1

         B.      4.3 kms^-1

         C.      8.9 kms^-1

         D.      37.0 kms^-1

6-The power of electric heater is:

         A.      2 * 10³W

         B.      2 * 10⁵W

         C.      1.1 * 10⁵W

         D.      1.6 * 10⁸ W

7-If the (Theta)>90⁰  then work done is:

         A.      +tive

         B.      0

         C.      –tive

         D.      None

8-The commercial unit of electricity is:

          A.      Watt second

          B.      Kilowatt-hour

          C.      Watt hour

          D.      None

9-Work has dimension like:

          A.      Torque

          B.      Force

          C.      Velocity

          D.      Momentum

10-The Ratio of dimension of K.E and Power

          A.      1 : 1

          B.      [T] : 1

          C.      1 : [T]

          D.      [M] : [T]

Short Questions

1-What is Conservative Field?

2-Define Solar Constant?

3-Define Power and its Unit?

4-Write 3 names of Conservative Forces?

5-State the law of Conservation of Energy?

Long Question (very important)

1-Interconversion of K.E and P.E energy?

2-Work done by constant force?

3-Work-Energy Principle?

4-Absolute Potential Energy?