Engineering Physics I Mock Test 4

10%

Question 1 of 10

1. Assertion: A needle placed carefully on the surface of the water may float, whereas a ball of the same material will always sink.
Reason: The buoyancy of an object depends both on the material and shape of the object

Assertion and reason is false

Both assertion and reason are true and the reason is the correct explanation of the assertion

Both assertion and reason are true but the reason is not the correct explanation of the assertion

Assertion is true but the reason is false

Question 1 of 10

Question 2 of 10

2. Which type of elasticity is involved in tangential push on the upper face of a block?

Rigidity modulus

Bulk modulus

Young’s modulus

Elastic limit

Question 2 of 10

Question 3 of 10

3. When the temperature is increased, the angle of contact of a liquid?

Remains the same

First increases and then decreases

Decrease

Increase

Question 3 of 10

Question 4 of 10

4. Energy stored in stretching a string per unit volume is ___________

1/2 Y(Stress)²

1/2×stress×strain

Y(Strain)²

stress×strain

Question 4 of 10

Question 5 of 10

5. When a rope is pulled on either side, what is the stress acting on it?

Compressive stress

Tangential stress

Tensile stress

Normal stress

Question 5 of 10

Question 6 of 10

6. If two soap bubbles of different radii are connected by a tube ___________

Air flows from bigger bubble to the smaller bubble till the sizes are interchanged

Air flow from the bigger bubble to the smaller bubble till the sizes become equal

Air flows from the smaller bubble to the bigger

There is no flow of air

Question 6 of 10

Question 7 of 10

7. Compared to burn due to air at 100°C, a burn due to steam at 100°C is ___________

Less dangerous

Not dangerous

Equally dangerous

More dangerous

Question 7 of 10

Question 8 of 10

8. The bulb of one thermometer is spherical, while that of other is cylindrical. If both of them have an equal amount of mercury, which one will respond quickly to the temperature?

Elliptical

Circle

Cylindrical

Spherical

Question 8 of 10

Question 9 of 10

9. The water droplets in free fall are spherical due to ___________

Viscosity

Surface tension

Intermolecular attraction

Gravity

Question 9 of 10

Question 10 of 10

10. According to Hooke’s law of elasticity, if stress is increased, the ratio of stress to strain?

Increased

Becomes zero

Remains constant

Decreased

Question 10 of 10