Mechanical Properties of Fluids class 12 physics chapter 2 Exercise solutions

Mechanical Properties of Fluids class 12 physics chapter 2 Exercise solutions

Class 12
Physics
2.Mechanical Properties of Fluids
Exercise solutions
By: solutions made easy

NUMERICAL | Mechanical Properties of Fluid Physics class 12 | Complete CHAPTER 2 NEW INDIAN ERA
Class 12 Mechanical properties of fluids numericals| Maharashtra board
Exercise ch-2 Mechanical Properties of fluids class 12 Physics new syllabus maharashtra board

1) Multiple Choice Questions
i) A hydraulic lift is designed to lift heavy objects of maximum mass 2000 kg. The area of cross section of piston carrying the load is 2.25 × 10-2 m2. What is the maximum pressure the smaller piston
would have to bear?
(A) 0.8711 × 106 N/m2
(B) 0.5862 × 107 N/m2
(C) 0.4869 × 105 N/m2
(D) 0.3271 × 104 N/m2
Answer: (A) 0.8711 × 106 N/m2

ii) Two capillary tubes of radii 0.3 cm and 0.6 cm are dipped in the same liquid. The ratio of heights through which the liquid will rise in the tubes is
(A) 1:2. (B) 2:1
(C) 1:4. (D) 4:1
Answer: (B) 2:1

iii) The energy stored in a soap bubble ofdiameter 6 cm and T = 0.04 N/m is nearly
(A) 0.9 × 10-³ J. (B) 0.4 × 10-³ J
(C) 0.7 × 10-³ J. (D) 0.5 × 10-³ J
Answer: (A) 0.9 × 10-³ J.

iv) Two hail stones with radii in the ratio of 1:4 fall from a great height through the atmosphere. Then the ratio of their terminal velocities is
(A) 1:2. (B) 1:12
(C) 1:16. (D) 1:8
Answer: (C) 1:16.

v) In Bernoulli's theorem, which of the following is conserved?
(A) linear momentum. (B) angular momentum
(C) mass. (D) energy
Answer: (D) energy
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2) Answer in brief.
i) Why is the surface tension of paints and lubricating oils kept low?
Answer:
For better wettability (surface coverage), the surface tension and angle of contact of paints and lubricating oils must below.

ii) How much amount of work is done in forming a soap bubble of radius r?
Answer:

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iii) What is the basis of the Bernoulli's principle?
Answer:
Conservation of energy is the basis of the Bernoulli's principle.

iv) Why is a low density liquid used as a manometric liquid in a physics laboratory?
Answer:

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class 12 physics chapter 2 exercise solutions
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mechanical properties of fluids class 12 new indian era

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[shaikh_aasim_]

Question 8 has ans. With alternate explanation beneath alternate

[s.chapte]

Chapter no 5 oscilation exercise pls sir