Which of the following is in a neutral equilibrium?
A heavy weight suspended on a string
The beam of a balance in use
A heavy-based table lamp
A cone resting on its slant edge
Calculate the temperature change when 500 J of heat is supplied to 100g of water.
12.1°C
2.1°C
1.2°C
0.1°C
To obtain a virtual, erect and magnified image from a thin converging lens, an object must be placed
between the focus and the lens
at the focus
between the focus and twice the focal length
beyond twice the focal length
A body of mass 2kg is released from a point 100m above the ground. Calculate its kinetic energy 80m from the point of release.
1600J
900J
600J
200J
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