Properties of Solids & Liquids-Young's Modulus (KVPY Stream SB-SX (Class 12 & 1st Year B.Sc.) 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

A horizontal steel railroad track has a length of 100 m when the temperature is 250 C. The track is constrained from expanding or bending. The stress on the track on a hot summer day, when the temperature is 400 C, is –

(Note: the linear coefficient of thermal expansion for steel is Equation and the Young’s modulus of steel is Equation )

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 2

» Properties of Solids & Liquids » Young's Modulus

Appeared in Year: 2016

MCQ▾

Question

A monochromatic light source Equation of wavelength Equation is placed slightly above a plane mirror Equation as shown. Image of Equation in Equation can be used as a virtual source to produce interference fringes on the screen. The distance of source Equation from Equation is Equation , and the distance of screen from Equation is Equation (figure is not to scale). If the angle Equation radians, the width of the interference fringes observed on the screen is –

Quadrilateral poly1 Quadrilateral poly1: Polygon A, B, C, DAngle α Angle α: Angle between E, B, ASegment a Segment a: Segment [A, B] of Quadrilateral poly1Segment b Segment b: Segment [B, C] of Quadrilateral poly1Segment c Segment c: Segment [C, D] of Quadrilateral poly1Segment d Segment d: Segment [D, A] of Quadrilateral poly1Segment f Segment f: Segment [E, B] Segment g Segment g: Segment [F, G] Point E E = (-3.4, 3.74) Point E E = (-3.4, 3.74) SO = 20.0 cm text1 = “SO = 20.0 cm”SO = 20.0 cm text1 = “SO = 20.0 cm”SO = 20.0 cm text1 = “SO = 20.0 cm”SO = 20.0 cm text1 = “SO = 20.0 cm”SO = 20.0 cm text1 = “SO = 20.0 cm”SO = 20.0 cm text1 = “SO = 20.0 cm”SO = 20.0 cm text1 = “SO = 20.0 cm”SO = 20.0 cm text1 = “SO = 20.0 cm”SO = 20.0 cm text1 = “SO = 20.0 cm”S text1_1 = “S”M text1_2 = “M”O text1_3 = “O”/theta text1_4 = “/theta”Screen text1_5 = “Screen”Screen text1_5 = “Screen”Screen text1_5 = “Screen”Screen text1_5 = “Screen”Screen text1_5 = “Screen”Screen text1_5 = “Screen”

an Experimental Setup With Monochromatic Light

In figure a monochromatic light source S of wavelength 440 nm is placed slightly above a plane mirror M is shown.

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

f Page
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