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- In an experiment to determine the focal length of a concave mirror, magnification M was determined for various image distance V. The figure below shows...(Solved)
In an experiment to determine the focal length of a concave mirror, magnification M was determined for various image distance V. The figure below shows a graph of magnification M against image distance V for the results from the experiment.
![fig2741120191604.png](/questions/uploads/fig2741120191604.png)
Use the graph to determine:
i) The focal length ,f of the mirror, given that M= 1 - v/f
ii) The image distance when the magnification is 0.6.
Date posted: November 4, 2019. Answers (1)
- An upright object is placed in front of a converging (convex lens). An image magnified 3 times was formed on the screen. If the distance...(Solved)
An upright object is placed in front of a converging (convex lens). An image magnified 3 times was formed on the screen. If the distance between the object and the screen was 80cm, determine:-
i) The object distance.
ii) The focal length of the lens.
Date posted: November 4, 2019. Answers (1)
- State what happens to the wavelength of a water wave when it moves from shallow to deep water.(Solved)
State what happens to the wavelength of a water wave when it moves from shallow to deep water.
Date posted: November 4, 2019. Answers (1)
- Draw a circuit diagram showing how a single diode can be used in half wave rectification.(Solved)
Draw a circuit diagram showing how a single diode can be used in half wave rectification.
Date posted: November 4, 2019. Answers (1)
- The figure below shows a ray of light transversing from a glass medium to air.
Determine the refractive index of glass.(Solved)
The figure below shows a ray of light transversing from a glass medium to air.
![fig2441120191547.png](/questions/uploads/fig2441120191547.png)
Determine the refractive index of glass.
Date posted: November 4, 2019. Answers (1)
- Illustrate by means of diagram what is meant by diffraction.(Solved)
Illustrate by means of diagram what is meant by diffraction.
Date posted: November 4, 2019. Answers (1)
- Figure below shows resistors connected in an electric circuit.
Determine the reading of the ammeter.(Solved)
Figure below shows resistors connected in an electric circuit.
![fig2241120191536.png](/questions/uploads/fig2241120191536.png)
Determine the reading of the ammeter.
Date posted: November 4, 2019. Answers (1)
- The figure below shows a wire wound round a soft iron core. A copper cube ,R, is placed just
below end Q.
i) Identify poles P and...(Solved)
The figure below shows a wire wound round a soft iron core. A copper cube ,R, is placed just
below end Q.
![fig2141120191531.png](/questions/uploads/fig2141120191531.png)
i) Identify poles P and Q when switch S is closed.
ii) State and explain what happens to copper cube R when switch S is closed.
Date posted: November 4, 2019. Answers (1)
- Below is a nuclear reaction equation.
Determine the values X and Y(Solved)
Below is a nuclear reaction equation.
![fig2041120191528.png](/questions/uploads/fig2041120191528.png)
Determine the values X and Y
Date posted: November 4, 2019. Answers (1)
- A pinhole camera is designed with many pinholes. State and explain what is observed on the image when the number of pinholes is decreased.(Solved)
A pinhole camera is designed with many pinholes. State and explain what is observed on the image when the number of pinholes is decreased.
Date posted: November 4, 2019. Answers (1)
- The table below shows radiations in their decreasing order of energy.
Identify radiation labeled Q(Solved)
The table below shows radiations in their decreasing order of energy.
![fig1941120191328.png](/questions/uploads/fig1941120191328.png)
Identify radiation labeled Q
Date posted: November 4, 2019. Answers (1)
- The figure below shows two plane mirrors inclined at 450 to one another. A ray of light is incident to the top mirror at 450.
Draw...(Solved)
The figure below shows two plane mirrors inclined at 450 to one another. A ray of light is incident to the top mirror at 450.
![fig1741120191253.png](/questions/uploads/fig1741120191253.png)
Draw the path followed by the ray after reflection.
Date posted: November 4, 2019. Answers (1)
- The table below shows data collected during investigation of Hooke’s law.
a). Complete the table.
b). Using the data in the table, plot a graph of force,...(Solved)
The table below shows data collected during investigation of Hooke’s law.
![fig1341120191239.png](/questions/uploads/fig1341120191239.png)
a). Complete the table.
b). Using the data in the table, plot a graph of force, F against extension, e in the attached gird below.
c). On the graph, indicate X, at the elastic limit
d). From the graph, determine the elastic spring constant for the material.
Date posted: November 4, 2019. Answers (1)
- A 2kg particle tied to rope is rotated about a circle of radius 10 m. given that the maximum tension allowed in the rope is...(Solved)
A 2kg particle tied to rope is rotated about a circle of radius 10 m. given that the maximum tension allowed in the rope is 50 N, determine the maximum speed of the particle if it is rotating in a:-
i). horizontal path.
ii). vertical path.
Date posted: November 4, 2019. Answers (1)
- What is the difference between uniform linear motion and uniform circular motion?(Solved)
What is the difference between uniform linear motion and uniform circular motion?
Date posted: November 4, 2019. Answers (1)
- What property of a gas makes it suitable for inflating tubes? (Solved)
What property of a gas makes it suitable for inflating tubes?
Date posted: November 4, 2019. Answers (1)
- The figure below shows a 4m long uniform metal rod balanced horizontally when two forces act on it as shown.
Determine the value of F given...(Solved)
The figure below shows a 4m long uniform metal rod balanced horizontally when two forces act on it as shown.
![fig84112019943.png](/questions/uploads/fig84112019943.png)
Determine the value of F given that the rod weighs 8 N.
Date posted: November 4, 2019. Answers (1)
- Name one scientific skill learnt in a physics practical class. (Solved)
Name one scientific skill learnt in a physics practical class.
Date posted: November 4, 2019. Answers (1)
- The temperature of water in a measuring cylinder is raised from 0oC to 15oC. Sketch the graph of volume against temperature. (Solved)
The temperature of water in a measuring cylinder is raised from 0oC to 15oC. Sketch the graph of volume against temperature.
Date posted: November 4, 2019. Answers (1)
- The figure below shows air blown into a major tube attached to two minor tubes that have been immersed in water. Explain what is observed...(Solved)
The figure below shows air blown into a major tube attached to two minor tubes that have been immersed in water. Explain what is observed then indicate the levels of water in the tubes of beaker X and Y.
![fig54112019935.png](/questions/uploads/fig54112019935.png)
Date posted: November 4, 2019. Answers (1)