The correct answer is (a) and (c).
Water cannot be used in thermometer because of its higher freezing point and lower boiling point than other liquids. If water is used in a thermometer, it will start phase change at 0°c and 100°c and will not measure temperature, out of this range. This range is very small as compared to other liquids as mercury, having freezing point about - 39°c and boiling point 356°c
English
150 Questions
150 Marks
150 Mins English English150 Questions150 Marks150 Mins English English150 Questions150 Marks150 Mins EnglishWhich law explains colours of stars based on temperature?
The three modes of heat transfer are:
Which of the following is correct about Specific heat capacity of water?
Efficiency of Carnot engine can be increased by:
The best conductor of heat among the following is
A graph of Fahrenheit temperature versus Celsius temperature is a straight line, whose intercept is _____.
A point mass has a velocity v = (1.0 m/s) i + (3.0 m/s) j, at a certain instant. At the same instant, it experiences a force F = - (2.0 N) i + (4.0 N) j + (5.0 N) k. i, j and k are unit vectors along x-, y-, and z- axis, respectively. The power delivered by the force, at that instant is:
The position(x)-time(t) graph of a ball is a straight line inclined at an angle of 30° to the x-axis. The ball is moving with:
Mohan (mass 60 kg) runs up a flight of stairs having a rise of 5 m in 6 s. The average power supplied by him during run up is (take = 10 ):
Suggested Test Series
Suggested Test Series
