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  1. (c) Value of acceleration due to gravity on the surface of moon is 1/6 th of its value on the surface of earth. Thus gmoon = 1/6 ,g eath = 9.8/6 m s⁻². https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-9/

    (c) Value of acceleration due to gravity on the surface of moon is 1/6 th of its value on the surface of earth. Thus gmoon = 1/6 ,g eath = 9.8/6 m s⁻².

    https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-9/

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  2. A regular pentagon has 5 lines of symmetry. Each line passes through a vertex and the midpoint of the opposite side. These lines divide the pentagon into mirror-image halves. Click here for more: https://www.tiwariacademy.com/ncert-solutions/class-6/maths/

    A regular pentagon has 5 lines of symmetry. Each line passes through a vertex and the midpoint of the opposite side. These lines divide the pentagon into mirror-image halves.

    Click here for more:
    https://www.tiwariacademy.com/ncert-solutions/class-6/maths/

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    • 12
  3. The smallest angle of rotational symmetry for a regular hexagon is 60°. A regular hexagon can be rotated by 60°, 120°, 180°, 240°, and 300° and still map onto itself. The smallest such angle is 60°. Click here for more: https://www.tiwariacademy.com/ncert-solutions/class-6/maths/

    The smallest angle of rotational symmetry for a regular hexagon is 60°. A regular hexagon can be rotated by 60°, 120°, 180°, 240°, and 300° and still map onto itself. The smallest such angle is 60°.

    Click here for more:
    https://www.tiwariacademy.com/ncert-solutions/class-6/maths/

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    • 9
  4. A scalene triangle has no line of symmetry. In a scalene triangle all its sides and angles are unequal, so it cannot be divided into two identical halves by any line. Click here for more: https://www.tiwariacademy.com/ncert-solutions/class-6/maths/

    A scalene triangle has no line of symmetry. In a scalene triangle all its sides and angles are unequal, so it cannot be divided into two identical halves by any line.

    Click here for more:
    https://www.tiwariacademy.com/ncert-solutions/class-6/maths/

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  5. (c) On the surface of earth value of 'g' is maximum at the poles and minimum at the equator. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-9/

    (c) On the surface of earth value of ‘g’ is maximum at the poles and minimum at the equator.

    https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-9/

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    • 5