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. 1 answer
2. 217 views
What is the correct formula of the uncertainty principle
1. 1 answer
2. 124 views
Which of the following equations is an equation of the uncertainty principle
1. 1 answer
2. 111 views
Which of the following optical instruments consists of converging lenses
1. 1 answer
2. 162 views
The magnetic elements at a place include but which one is correct
1. 1 answer
2. 175 views
The magnetic elements at a place include
1. 1 answer
2. 111 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. 1 answer
2. 169 views
Statement that is correct about electric lines of forces
1. 1 answer
2. 128 views
In which of the fields is repulsion not experienced electric,electrostatic,gravitational and magnetic
1. 1 answer
2. 125 views
Examples of fields
1. 1 answer
2. 112 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. 1 answer
2. 116 views
Which part of the human eye performs the same function as the diaphragm of a camera
1. 1 answer
2. 109 views
Statement that are correct about gamma rays and X-rays
1. 1 answer
2. 122 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. 1 answer
2. 145 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. 1 answer
2. 135 views
Which of the following waves requires air for transmission
1. 1 answer
2. 129 views
Which of the following devices is used for storing electrostatic charges only
1. 1 answer
2. 94 views
Condensation of water vapour is directly responsible for the
1. 1 answer
2. 137 views
Which thermometric properties is employed in a liquid-in-glass thermometer when in use? change in
1. 1 answer
2. 106 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. 1 answer
2. 175 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. 1 answer
2. 167 views
Two forces of magnitude 25N and 16N are inclined at an angle of 120 degree to each other. Calculate the magnitude of their
1. 4 answers
2. 185 views
Which of the following sets of S.I units is fundamental only
1. 2 answers
2. 154 views
An object weighs 0.25N in air and 0.21N when fully immersed in water. Calculate the relative density of the object
1. 1 answer
2. 274 views

Answers (1)

Is failed because the answer is not in my question paper

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