NEST (National Entrance Screening Test) Physics: Questions 46 - 48 of 58

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Question number: 46

» Properties of Solids & Liquids » Application of Surface Tension

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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 and the weight of the insect is distributed equally over the six legs. The coefficient of surface tension in this case is and the angle of the footfall with respect to the vertical is (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.

b.

c.

d.

Question number: 47

» Work, Energy and Power » Conservation of Mechanical Energy

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Appeared in Year: 2015

MCQ▾

Question

A mass of is dropped from a height of on a horizontal spring board. The vertical spring supporting the board has a spring constant of . The maximum distance by which the mass compresses the spring is close to –

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 48

» Physics and Measurement » Dimensional Analysis and Its Applications

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Appeared in Year: 2019

Essay Question▾

Describe in Detail

The three-dimensional object sketched on the right is made by taking a solid sphere of uniform density (shaded) with radius and scooping out a spherical cavity (unshaded) as shown, which has diameter . If this object has mass , its moment of inertia about the tangential axis passing through the point where the spheres touch (as shown in figure) is:

Image shows The Three-Dimensional

Image Shows the Three-Dimensional

Image shows The Three-Dimensional

Explanation

Mass of object

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