physics 101 assignment 2 solution 2023

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PHY101 Assignment 2 Sol

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(PHY101) Assignment # 2 Solution Semester: SPRING 2023 PHYSICS (PHY101)

Total Marks: 25 Due Date: 24th July, 2023

The assignment has been designed to enhance your

knowledge and understanding about Laws of Physics and

application of Physics in our daily life.

Instructions:

 Please read the following instructions carefully before solving & submitting assignment:  To solve this assignment, you should have good command over 16 to 38 video lectures.  The assignment will not be accepted after due date.  Zero marks will be awarded to the assignment that does not open or the file is corrupt.

 The assignment file must be an MS word (doc) file format; Assignment will not be accepted in any other format.  Use Math Type or Equation Editor etc for mathematical symbols.  Zero marks will be awarded to the assignment if copied (from other student or copied from handouts or internet).  Don’t wait for the last date to submit your assignment.

For any query about the assignment, contact only [email protected]

Do not post queries related to assignment on MDB.

In a series circuit, the current remains the same at any given point. This is because the current flowing through one component is equal to the current flowing through any other component connected in series. When current flows through a resistor, it encounters resistance. According to Ohm's Law, if the resistance (R) increases, the current (I) will decrease for a given voltage (V). As the current passes through the resistor, energy is dissipated in the form of heat due to the resistance. However, the total current entering the resistor must be the same as the total current leaving it since the circuit is in series.

Therefore, the current remains constant both before and after passing through the resistor.

Question # Marks = 05

Using the law of Physics, explain this concept, “why do waves changes path when their speed changes”? Explain this phenomenon, for instance, using the mechanical comparison in the photo shown.

Refraction of waves involves a change in the direction of waves as they pass from one medium to another. Refraction, or bending of the path of the waves, is accompanied by a change in speed I and wavelength of the waves. So if the media (or its

properties) are changed, the speed of the wave is changed. Thus, waves passing from one medium to another will undergo refraction.

In given figure we clearly see that is first path is straight and it medium is dry road, and it enters into Water(ice) its change its speed and path as well by the phenomenon of refraction

Question # 3 Marks = 05

A physics student asserted that he had determined that a substance (material) had a refractive index of 0. Give your professional judgement on this claim. Give a good argument to support it or negate it.

Question # 4 Marks = 10

What portion (percentage) of this iceberg lies beneath the surface of the water? Use the density values listed in the figure. Use the law of physics to compute it.

FB  W . gV  V Vi

Here V =Volume of water is displaced by the iceberg =

volume of the iceberg below the surface V =Volume of the iceberg

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University : virtual university of pakistan.

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