Physics Test - ...

Stretching of a rubber band results in ___________.

A wire whose cross-section area is 4mm² is stretched by 0.1mm by a certain weight. How far will a wire of the same material and length stretch, if its cross-sectional area is 8mm² and the same weight is attached?

One end of a horizontal thick copper wire of length 2L and radius 2R is welded to an end of another horizontal thin copper wire of length L and radius R. When the arrangement is stretched by applying forces at two ends, the ratio of the elongation in the thin wire to that in the thick wire is:

Let L be the length and d be the diameter of cross-section of a wire. Wires of the same material with different L and d are subjected to the same tension along the length of the wire. In which of the following cases, the extension of wire will be the maximum?

A wire can be broken by applying load of 200N. The force required to break another wire of the same length and same material, but double in diameter is

How much force is required to produce an increase of 0.2% in the length of a brass wire of diameter 0.6 mm? (Young's modulus for brass =0.9×10¹¹N/m²)

The tangential or shear stress on an oblique plane at an angle θ to the cross-section of a body which is subjected to a direct tensile stress (σ) is equal to

The following substances which possess rigidity modulus

When water falls from a tap the velocity of falling water under the action of gravity will increase and the cross section of the water stream will decrease i.e., the falling stream of water becomes narrower.It is based on :