Generate Quiz 6A0745A36A49A

1 / 10

Which feature of the following graph represents Young’s Modulus?

Elimination Tool

A) Area under graph

B) Gradient of the graph

C) Reciprocal of the gradient

D) Product of gradient and area of the curve.

2 / 10

Which of the following has the lowest value of Young’s modulus?

Elimination Tool

A) Steel

B) Glass

C) Copper

D) Rubber

3 / 10

The young’s modulus of a given rod of uniform length 𝐿 is given by the relation:

Elimination Tool

A) 𝐹𝐿/𝐴

B) 𝐹𝐴/L

C) F𝐿/𝜋𝑟2𝑙

D) F𝑙/𝜋𝑟2L

4 / 10

A wire of area of cross section ‘A’ and original length ‘l’ is subjected to a load
‘L’. A second wire of the same material with an area is ‘2A’ and length ‘2l’ is
subjected to the same load ‘L’. If the extension in the first wire is ‘X’ and the second
wire is ‘Y’, find the ratio ‘X/Y’.

Elimination Tool

A) 1:4

B) 1:2

C) 1:1

D) 2:1

5 / 10

If a substance can undergo plastic deformation, until it breaks, it is:

Elimination Tool

A) Ductile substance

B) Brittle substance

C) Crystalline substance

D) Polymeric substance

6 / 10

A wire of diameter d and length l hangs vertically from a fixed point. The wire is extended by hanging a mass M on its end. The Young modulus of the wire is E. The acceleration of free fall is g. Which equation is used to determine the extension x of the wire?

Elimination Tool

A) Option A

B) Option B

C) Option C

D) Option D

7 / 10

A wire is stretched by a force ‘F’ which causes an extension ∆l, the energy stored in the wire is:

Elimination Tool

A) F∆l

B) 2F∆l

C) ½ F∆l2

D) ½ F∆l

8 / 10

The given stress-strain graph shows the different changes that occur in a body when stress is applied on it. Which point shows the ultimate strength of the body?

Elimination Tool

A) A

B) B

C) C

D) D

9 / 10

When an applied stress changes the volume, the change in volume per unit volume is known as:

Elimination Tool

A) Polymetric strain

B) Crystalline strain

C) Volumetric strain

D) Equal strain

10 / 10

Which of the following can have negative temperature coefficient?

Elimination Tool

A) Compounds of silver

B) Liquid metals

C) Metallic alloys

D) Electrolytes

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