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The working principle of a rocket engine is based on the-

  • Q. The working principle of a rocket engine is based on the-
  • filter_dramaExplanation
    Answer is : C

    Newton’s third law of motion
    • Newton’s third law states that if we are applying a force on any object then that object also applies equal and opposite force on us. It is also called the action and reaction force.
    • Applied force = Reaction force.
    • Rocket exhausting a gas with a very high velocity which provides the reaction force on the rocket, due to which it moves upward.

    Newton’s first law of motion-
    • Newton’s first law states that an object will remain at rest or in uniform motion unless an external force acts upon it.
    • It is also called the law of inertia.

    Newton’s second law of motion
    • The acceleration of any object is directly proportional to the net applied force.
    • The direction of the acceleration of the object will always be in the direction of the net applied force.
    • F = ma, where m is the mass of the object and a is the acceleration of the object.

    Conservation of energy
    • The conservation of energy states that energy neither can produce nor can destroy, it can convert from one form to another form.

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Similar Questions

  • 1. A process that is repeated, evaluated, and refined is called:
  • filter_dramaExplanation
    Answer is : D
    No Explanation
  • 2. The core part of an operating system which is one of the first programs loaded on start-up and manages computer system resources is:
  • filter_dramaExplanation
    Answer is : D

    The correct answer is Kernel.

    Key Points

    • The first program loaded on start-up and manages computer system resources is Kernel.
    • A kernel is the central part of an operating system.
    • It manages the operations of the computer and the hardware, most notably memory and CPU time.
    • There are five types of kernels:
      • A microkernel, which only contains basic functionality
      • A monolithic kernel, which contains many device drivers
      • Hybrid Kernel
      • Exokernel
      • Microkernel

    Additional Information

    • Resources under the Operating System control:
      • The processor.
      • Main memory.
      • Input/Output Device.
      • Secondary storage devices.
      • Communication devices and ports. 
  • 3. Where is Lok Kala Mandal located?
  • filter_dramaExplanation
    Answer is : C

    The correct answer is Udaipur.

    Key Points

    • Lok Kala Mandal is a cultural organization established in Udaipur, Rajasthan that focuses on researching the folklore, music, and celebrations of Madhya Pradesh, Gujarat, and Rajasthan.
    • Its primary goal is to promote and popularize folk music, dance, and literature.
    • In 1952, Devilal Samar founded it.
    • The organization maintains a museum where a variety of Rajasthani traditional items, including rural clothing, jewelry, puppets, masks, dolls, folk musical instruments, folk deities, and paintings, are shown.
    • There is a puppet theater as well, where puppet performances are presented frequently.
    • Bhartiya Lok Kala Museum is a part of their program that displays the best art and craft of Mewar.
  • 4. According to Tharnwet ,EA'd climate is similar to which of the following climate?
  • filter_dramaExplanation
    Answer is : C

    The correct answer is Desert Climate.

    Key Points

    • According to Tharnwet, Rajasthan has four climate region-
      •  CA'w-
        • This climate region is similar to the subhumid/arid and wet-dry region.
        • Rajasthan's Udaipur, Dungarpur, Banswara, Kota, Baran, Jhalawar districts come in this region.
        • Sawana and Monsoon type flora is found in this region.
      • DA'w-
        • This climate region is similar to the semi-arid/tropical-wet climate region.
        • Rajasthan's  Barmer, Jodhpur, Churu, Jalore, Pali, Ajmer, Bundi, Sawai Madhopur districts come in this region.
        • Semi-desert flora is found in this region.
      • DB'w-
        • This climate region is similar to the mid thermal semi-dry/mixed climate region.
        • Rajasthan's Ganganagar, Hanumangarh, Bikaner, Churu districts come in this region.
        • Thorny bushes and semi-desert flora is found in this region.
      • EA'd-
        • This climate region is similar to the Desert climate region.
        • Rajasthan's Jaisalmer, Western Jodhpur, South-West Bikaner, North-West Barmer come in this region.
        • Desert flora is found in this region
  • 5. Which of the following is not a valid IP address?
  • filter_dramaExplanation
    Answer is : C

    The correct answer is 192.10.23.350.

    • Any address that begins with a 0 is invalid.
      • Exception - as a default route
    • Any address with a number above 255 is invalid IP.
    • Any address that has more than 3 dots is invalid IP.
    • Any address that begins with a number between 240 and 255 is reserved and is invalid.
    • Any address that begins with a number between 224 and 239 is reserved for multicast, and it is probably invalid.

    Key Points

    • An Internet Protocol address (IP address) is a numerical number assigned to every computer and device.
    • It is used when connected to a computer network that uses the Internet Protocol for communication.
    • An IP address serves two main functions:
      • host or network interface identification
      • location addressing.

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