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Questions and answers by
Uchenna jecinta
Questions (24)
The distance between the lenses of an astronomical telescope in the normal adjustment is 150cm. If the focal length of the eye
1 answer
193 views
What is the correct formula of the uncertainty principle
1 answer
116 views
Which of the following equations is an equation of the uncertainty principle
1 answer
104 views
Which of the following optical instruments consists of converging lenses
1 answer
150 views
The magnetic elements at a place include but which one is correct
1 answer
162 views
The magnetic elements at a place include
1 answer
100 views
The balance length of a potentiometer wire connected to a cell of an unknown e.m.f. is 90.0cm.when the cell is replaced by a
1 answer
155 views
Statement that is correct about electric lines of forces
1 answer
123 views
In which of the fields is repulsion not experienced electric,electrostatic,gravitational and magnetic
1 answer
113 views
Examples of fields
1 answer
102 views
The air column in an open pipe of length 10cm is cm is set into vibration.calculate the frequency of the second overtone
1 answer
106 views
Which part of the human eye performs the same function as the diaphragm of a camera
1 answer
99 views
Statement that are correct about gamma rays and X-rays
1 answer
111 views
The image formed by a converging lens is upright and magnified 5times.calculate its distance if the focal length of the lens is
1 answer
131 views
An object is placed between the focal length F and the center of curvature C of a concave mirror.where is the image formed and
1 answer
117 views
Which of the following waves requires air for transmission
1 answer
125 views
Which of the following devices is used for storing electrostatic charges only
1 answer
86 views
Condensation of water vapour is directly responsible for the
1 answer
123 views
Which thermometric properties is employed in a liquid-in-glass thermometer when in use? change in
1 answer
99 views
A machine with a velocity ratio of 7 is 80% efficient. Determine the magnitude of the effort required to lift a load of 3500N
1 answer
159 views
An engine was used to raise 120 kg of water through a height of 40m in 25s. Calculate the power of the engine (g=10ms)
1 answer
150 views
Two forces of magnitude 25N and 16N are inclined at an angle of 120 degree to each other. Calculate the magnitude of their
4 answers
164 views
Which of the following sets of S.I units is fundamental only
2 answers
133 views
An object weighs 0.25N in air and 0.21N when fully immersed in water. Calculate the relative density of the object
1 answer
242 views
Answers (1)
Is failed because the answer is not in my question paper
