Properties of Solids & Liquids (NEST (National Entrance Screening Test) Physics): Questions 1 - 2 of 2

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Question number: 1

» Properties of Solids & Liquids » Young's Modulus

Appeared in Year: 2015

MCQ▾

Question

The stress – strain plot for wires made of two materials (Equation and Equation ) is presented schematically in the accompanying figure. The points Equation and Equation represent fracture points of the two materials Equation and Equation respectively. It can be concluded from these graphs that –

Graph of Stress vs Strain

Graph of Stress vs Strain

In figure graph of stress vs strain of two different materials is shown

Choices

Choice (4) Response

a.

Material Equation has Young’s modulus larger than that of material Equation

b.

Material Equation and Equation are equally brittle

c.

The linear region of material Equation extends to a larger value of stress that of material Equation .

d.

Material Equation is more ductile than material Equation

Question number: 2

» Properties of Solids & Liquids » Application of Surface Tension

Appeared in Year: 2014

MCQ▾

Question

The surface of a liquid is just able to support the weight of a six – legged insect. The leg ends can be assumed to be spheres each of radius Equation and the weight of the insect is distributed equally over the six legs. The coefficient of surface tension in this case is Equation and the angle of the footfall with respect to the vertical is Equation (see figure). The mass of the insect is closed to –

Leg of insect floating on surface of liquid

Leg of Insect Floating on Surface of Liquid

In figure a sphere shaped leg of insect floating on surface of liquid is shown

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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