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Class 11 Physics (Part Ii) Chapter 11 Mechanical Properties Of Solids Quiz 1 (25 MCQs)

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1. Modulus of rigidity is minimum in .....
2. A long spring is stretched by 2 cm and its P.E is V. If the spring is stretched by 10 cm its P.E will be
3. The forces of attraction between molecules of two different materials are called as .....
4. A balloon 's volume decreases by 1% when its pressure is increased by 80%. So its Bulk modulus is
5. The modulus of elasticity corresponding to change in volume is called as .....
6. The ratio of $\frac{F}{A\theta}$
7. % elongation is
8. Greater the angle of inclination of the stress strain curve less is the elasticity.
9. Which of the following is a characteristic property of solids?
10. According to Hooke's law of elasticity, if stress is increased, then the ratio of stress to strain:
11. Excess pressure inside an air bubble formedin water is
12. When force is acting parallel to surface then the corresponding stress is known as
13. The restoring force per unit area is known as:
14. In which of the following processes does a solid directly change into a gas?
15. According to Hooke's law for a linear spring, which mathematical expression correctly relates the restoring force and displacement?
16. What happens to the particles in a solid as it is heated?
17. Find the derivative of the function $x^5$
18. Correct pair is
19. What will be the rate of flow of the liquid (meter cube/s) in a tube of radius 2 m if liquid is flowing in this tube with velocity $\frac{1}{\pi}$
20. If a force of 0.98 N is applied to a mass of 0.25kg. The coefficient of friction is ..... (g=9.8 m/s$^{2}$)
21. Acceleration due to gravity ..... with height and ..... with depth.
22. The ability to be stretched into a wire
23. The length of a metal wire is L when the tension is F and xL when the tension is yF. Then the natural length of the wire is
24. Small insects can move over the surface of water because of
25. Two wires A and B of same material have radii 2:1 and lengths in the ratio 4:1. The ratio of the normal forces required to produce the same change in the lengths of these two wires is
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