The breaking load of a 200 denier multifilament yarn containing 130 filaments found to be 800 gram force. Its tensile strength in gram force/denier is

When the electrical field parallel to the fibre axis, the refractive index will be

Which one of the following equation is used to calculate the work factor ?

If a fibre obeyed Hooke's law, the load-elongation curve would be a

In LCR circuite, the capacitance is changed from C to 4C. To obtain the same resonant frequency, the inductance value has to be changed to which of the following L values.

In Newton's rings experiment, if the diameter of 10th ring changes from 1.40 to 1.27 cm when a drop of liquid is introduced between the lens and glass plate, what will be the refractive index of the liquid