PHYSICS

Class 11

Comprehensive Questions

Chapter 4

Q 1 | Define work and show that it is the dot product of force and displacement. At work conditions work done will be maximum or minimum? See answer |

Q 2 | Define power and show that power is the dot product of force and velocity. What are the different units of power used in our daily life. See answer |

Q 3 | Explain the work energy principle in the case of change in the K.E of body? See answer. |

Q 4 | Prove that Absolute P.E = (GmM_{e})/R_{e}. See Answer |

Q 5 | Calculate the value of the escape velocity of a body and show that it is equal to 11.2 km/s. See Answer. |

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