Question 21 : In steady flow, streamline, streakline, pathline are the same.
1. True
2. False
3.
4.
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Question 22 : Which of the following are the imaginary lines?
1. Streamline and pathline
2. Pathline and streakline
3. Streamline and streakline
4. Only streamline
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Question 23 : The smoke particles coming out from the chimney falls under ____________
1. Streamline
2. Streakline
3. Path line
4. Position vector
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Question 24 : Ram was on the bank of the river and was observing the flow of river. After sometime he got an idea and he started imagining certain points in the fluid and when he drew tangent to those points, he got direction of the flow. These lines are called as _____________
1. Streakline
2. Pathline
3. Streamline
4. Velocity vector
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Question 25 : In a thermodynamic system, the measurement of heat is called as ___________
1. Entropy
2. Enthalpy
3. Internal energy
4. Heat transfer
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Question 26 : Determine the kinetic energy of the body of mass 90 kg moving with a speed of 200 m/s.
1. 15000 Joules
2. 900000 Joules
3. 21000 Joules
4. 40000 Joules
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Question 27 : The SI unit of kinetic energy is ___________
1. Newton
2. Joules
3. Pascal
4. Meters
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Question 28 : A body moves 5m in a forward direction and then comes back to the same position. Which of the following energy does it have?
1. Potential energy
2. Sum of kinetic energy plus potential energy
3. Kinetic energy
4. Impulsive energy
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Question 29 : The formula for kinetic energy is __________
1. KE = 0.5*m*v
2. KE = 0.5*m*v²
3. KE = m*v²
4. KE = 0.6*m*v²
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Question 30 : The kinetic energy of an object depends only on magnitude.
1. True
2. False
3.
4.
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