71. Which of the following statements is not true regarding the effect of increasing temperature on the distribution of molecular motion in a gas-
72. Consider the following statements.
The rise of a liquid in a capillary tube depends on
1. The surface tension of liquid
2. The length
3. The outer radius
4. The inner radius of the tube
Which of the following statements is/are true?
The rise of a liquid in a capillary tube depends on
1. The surface tension of liquid
2. The length
3. The outer radius
4. The inner radius of the tube
Which of the following statements is/are true?
73. While travelling by plane, the ink of the pen starts to come out
74. Assertion (A) Pascal law is the working principle of a hydraulic lift.
Reason (R) Pressure is equal to thrust per unit area.
Reason (R) Pressure is equal to thrust per unit area.
75. When pressure is applied to a fluid, the pressure change is transmitted to every part of the fluid without any loss. Which of the following laws explains this phenomenon?
76. The SI unit of elastic potential energy is
77. The breaking stress of wire depends on
78. Any body kept in a fluid experiences an upward force called . . . . . . . .
79. Assertion (A) The concept of surface tension is held only for liquid.
Reason (R) Surface tension does not hold for gases.
Reason (R) Surface tension does not hold for gases.
80. The pressure of a fluid varies with depth h as p = p0 + pgh, where p is the fluid density. This expression is associated with
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