A small drop is formed using a dropper over a clean solid surface, then which of the following s... VIDEO
A small drop is formed using a dropper over a clean solid surface, then which of the following statement(s) is/are correct?
Where, \( S_{l a}= \) surface force of liquid and air, \( S_{s a}= \) surface force of solid and air and \( S_{l s}= \) surface force of liquid and solid.
(a) If \( S_{L s}S_{l a} \), then angle of contact is less than \( 90^{\circ} \).
(b) If \( S_{l s}S_{l a} \), then angle of contact is equal to \( 90^{\circ} \).
(c) If \( S_{l s}S_{l a} \), then liquid spreads over solid surface.
(d) If \( S_{l s}S_{l a} \), then liquid does not spread on solid surface.
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live
Other Videos By PW Solutions 2022-11-07 The correct value of \( 0^{\circ} \mathrm{C} \) on Kelvin scale will be
(a) \( 273.15 \mathrm{~K... 2022-11-07 Measurements on real gases deviate from the values predicted by the ideal gas law at
(a) high te... 2022-11-07 With a constant-volume gas thermometer, temperature is read in terms of
(a) volume
(b) pressure
... 2022-11-07 The graph of Fahrenheit temperature \( (F) \) versus Celsius temperature \( (C) \) is shown belo... 2022-11-07 On centigrade or Celsius scale \( \left({ }^{\circ} \mathrm{C}\right) \), the temperature of a b... 2022-11-07 When the pressure is held constant, the volume of a quantity of the gas is related to the temper... 2022-11-07 A thermometer graduated according to a linear scale reads a value \( x_{0} \), when in contact w... 2022-11-07 The ice point and the steam point of water are two convenient fixed points and are known as the
... 2022-11-07 A glass of ice-cold water left on a table on a hot summer day eventually warms up, whereas a cup... 2022-11-07 Match the Column I (situation) with Column II (reason or principle) and select the correct answe... 2022-11-07 A small drop is formed using a dropper over a clean solid surface, then which of the following s... 2022-11-07 The temperature at which centigrade and Fahrenheit scales give the same reading, is
(a) \( -40^{... 2022-11-07 A metal block of area \( 0.10 \mathrm{~m}^{2} \) is connected to a \( 0.010 \mathrm{~kg} \) mass... 2022-11-07 Match the Column I (situation) with Column II (value or changes) and select the correct answer f... 2022-11-07 On a hilly region, water boils at \( 95^{\circ} \mathrm{C} \). The temperature expressed in Fahr... 2022-11-07 The common physical property which is to be used as the basis for constructing thermometer is
(a... 2022-11-07 Match the Column I (terms or quantities) with Column II (dimensions) and select the correct answ... 2022-11-07 1. Stress depends on the rate of change of strain or strain rate.
II. The coefficient of viscos... 2022-11-07 A hydraulic lift has limbs of areas \( A_{1} \) and \( A_{2} \) \( \left(A_{1} \gg A_{2}\right) ... 2022-11-07 Water rises to a height \( h \) in capillary tube. If the length of capillary tube above the sur... 2022-11-07 A thin uniform cylindrical sheet, closed at both ends, is partially filled with water. It is flo...