01. Potential and Kinetic Energy
Work, Energy and Power

148942 Water falls from a height of $60 \mathrm{~m}$ at the rate of $15 \mathrm{~kg} / \mathrm{s}$ to operate a turbine. The losses due to frictional force are $10 \%$ of the input energy. How much power is generated by the turbine? $\left(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^{2}\right)$

1 $10.2 \mathrm{~kW}$
2 $8.1 \mathrm{~kW}$
3 $12.3 \mathrm{~kW}$
4 $7.0 \mathrm{~kW}$
Work, Energy and Power

148943 A $500 \mathrm{~kg}$ car takes a round turn of radius $50 \mathrm{~m}$ with a velocity of $36 \mathrm{kmph}$. The centripetal force acting on the car is

1 $250 \mathrm{~N}$
2 $500 \mathrm{~N}$
3 $750 \mathrm{~N}$
4 $1000 \mathrm{~N}$
Work, Energy and Power

148944 A small body slides down a smooth uneven surface from a height $H$ which eventually emerges into a circular loop of radius $\mathrm{R}( \lt \mathrm{H})$. What should be the value of $H$ so that the force on the body at $A$ is $\sqrt{2}$ times its weight?

1 $\mathrm{H}=\frac{3 \mathrm{R}}{2}$
2 $\mathrm{H}=5 \mathrm{R}$
3 $\mathrm{H}=\frac{5 \mathrm{R}}{2}$
4 $\mathrm{H}=3 \mathrm{R}$
Work, Energy and Power

148946 What is the nature of the graph between momentum of a body and its kinetic energy?

1 Straight line
2 Parabola
3 Circle
4 Ellipse
Work, Energy and Power

148947 When the mass and speed of the body are doubled, the kinetic energy of the body:

1 Becomes double
2 Becomes four times
3 Becomes eight time
4 Remains unchanged.
Work, Energy and Power

148942 Water falls from a height of $60 \mathrm{~m}$ at the rate of $15 \mathrm{~kg} / \mathrm{s}$ to operate a turbine. The losses due to frictional force are $10 \%$ of the input energy. How much power is generated by the turbine? $\left(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^{2}\right)$

1 $10.2 \mathrm{~kW}$
2 $8.1 \mathrm{~kW}$
3 $12.3 \mathrm{~kW}$
4 $7.0 \mathrm{~kW}$
Work, Energy and Power

148943 A $500 \mathrm{~kg}$ car takes a round turn of radius $50 \mathrm{~m}$ with a velocity of $36 \mathrm{kmph}$. The centripetal force acting on the car is

1 $250 \mathrm{~N}$
2 $500 \mathrm{~N}$
3 $750 \mathrm{~N}$
4 $1000 \mathrm{~N}$
Work, Energy and Power

148944 A small body slides down a smooth uneven surface from a height $H$ which eventually emerges into a circular loop of radius $\mathrm{R}( \lt \mathrm{H})$. What should be the value of $H$ so that the force on the body at $A$ is $\sqrt{2}$ times its weight?

1 $\mathrm{H}=\frac{3 \mathrm{R}}{2}$
2 $\mathrm{H}=5 \mathrm{R}$
3 $\mathrm{H}=\frac{5 \mathrm{R}}{2}$
4 $\mathrm{H}=3 \mathrm{R}$
Work, Energy and Power

148946 What is the nature of the graph between momentum of a body and its kinetic energy?

1 Straight line
2 Parabola
3 Circle
4 Ellipse
Work, Energy and Power

148947 When the mass and speed of the body are doubled, the kinetic energy of the body:

1 Becomes double
2 Becomes four times
3 Becomes eight time
4 Remains unchanged.
Work, Energy and Power

148942 Water falls from a height of $60 \mathrm{~m}$ at the rate of $15 \mathrm{~kg} / \mathrm{s}$ to operate a turbine. The losses due to frictional force are $10 \%$ of the input energy. How much power is generated by the turbine? $\left(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^{2}\right)$

1 $10.2 \mathrm{~kW}$
2 $8.1 \mathrm{~kW}$
3 $12.3 \mathrm{~kW}$
4 $7.0 \mathrm{~kW}$
Work, Energy and Power

148943 A $500 \mathrm{~kg}$ car takes a round turn of radius $50 \mathrm{~m}$ with a velocity of $36 \mathrm{kmph}$. The centripetal force acting on the car is

1 $250 \mathrm{~N}$
2 $500 \mathrm{~N}$
3 $750 \mathrm{~N}$
4 $1000 \mathrm{~N}$
Work, Energy and Power

148944 A small body slides down a smooth uneven surface from a height $H$ which eventually emerges into a circular loop of radius $\mathrm{R}( \lt \mathrm{H})$. What should be the value of $H$ so that the force on the body at $A$ is $\sqrt{2}$ times its weight?

1 $\mathrm{H}=\frac{3 \mathrm{R}}{2}$
2 $\mathrm{H}=5 \mathrm{R}$
3 $\mathrm{H}=\frac{5 \mathrm{R}}{2}$
4 $\mathrm{H}=3 \mathrm{R}$
Work, Energy and Power

148946 What is the nature of the graph between momentum of a body and its kinetic energy?

1 Straight line
2 Parabola
3 Circle
4 Ellipse
Work, Energy and Power

148947 When the mass and speed of the body are doubled, the kinetic energy of the body:

1 Becomes double
2 Becomes four times
3 Becomes eight time
4 Remains unchanged.
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
Work, Energy and Power

148942 Water falls from a height of $60 \mathrm{~m}$ at the rate of $15 \mathrm{~kg} / \mathrm{s}$ to operate a turbine. The losses due to frictional force are $10 \%$ of the input energy. How much power is generated by the turbine? $\left(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^{2}\right)$

1 $10.2 \mathrm{~kW}$
2 $8.1 \mathrm{~kW}$
3 $12.3 \mathrm{~kW}$
4 $7.0 \mathrm{~kW}$
Work, Energy and Power

148943 A $500 \mathrm{~kg}$ car takes a round turn of radius $50 \mathrm{~m}$ with a velocity of $36 \mathrm{kmph}$. The centripetal force acting on the car is

1 $250 \mathrm{~N}$
2 $500 \mathrm{~N}$
3 $750 \mathrm{~N}$
4 $1000 \mathrm{~N}$
Work, Energy and Power

148944 A small body slides down a smooth uneven surface from a height $H$ which eventually emerges into a circular loop of radius $\mathrm{R}( \lt \mathrm{H})$. What should be the value of $H$ so that the force on the body at $A$ is $\sqrt{2}$ times its weight?

1 $\mathrm{H}=\frac{3 \mathrm{R}}{2}$
2 $\mathrm{H}=5 \mathrm{R}$
3 $\mathrm{H}=\frac{5 \mathrm{R}}{2}$
4 $\mathrm{H}=3 \mathrm{R}$
Work, Energy and Power

148946 What is the nature of the graph between momentum of a body and its kinetic energy?

1 Straight line
2 Parabola
3 Circle
4 Ellipse
Work, Energy and Power

148947 When the mass and speed of the body are doubled, the kinetic energy of the body:

1 Becomes double
2 Becomes four times
3 Becomes eight time
4 Remains unchanged.
Work, Energy and Power

148942 Water falls from a height of $60 \mathrm{~m}$ at the rate of $15 \mathrm{~kg} / \mathrm{s}$ to operate a turbine. The losses due to frictional force are $10 \%$ of the input energy. How much power is generated by the turbine? $\left(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^{2}\right)$

1 $10.2 \mathrm{~kW}$
2 $8.1 \mathrm{~kW}$
3 $12.3 \mathrm{~kW}$
4 $7.0 \mathrm{~kW}$
Work, Energy and Power

148943 A $500 \mathrm{~kg}$ car takes a round turn of radius $50 \mathrm{~m}$ with a velocity of $36 \mathrm{kmph}$. The centripetal force acting on the car is

1 $250 \mathrm{~N}$
2 $500 \mathrm{~N}$
3 $750 \mathrm{~N}$
4 $1000 \mathrm{~N}$
Work, Energy and Power

148944 A small body slides down a smooth uneven surface from a height $H$ which eventually emerges into a circular loop of radius $\mathrm{R}( \lt \mathrm{H})$. What should be the value of $H$ so that the force on the body at $A$ is $\sqrt{2}$ times its weight?

1 $\mathrm{H}=\frac{3 \mathrm{R}}{2}$
2 $\mathrm{H}=5 \mathrm{R}$
3 $\mathrm{H}=\frac{5 \mathrm{R}}{2}$
4 $\mathrm{H}=3 \mathrm{R}$
Work, Energy and Power

148946 What is the nature of the graph between momentum of a body and its kinetic energy?

1 Straight line
2 Parabola
3 Circle
4 Ellipse
Work, Energy and Power

148947 When the mass and speed of the body are doubled, the kinetic energy of the body:

1 Becomes double
2 Becomes four times
3 Becomes eight time
4 Remains unchanged.