Physics
A ball is thrown vertically upward from the ground. It crosses a point at the height of 25 m twice at an interval of 4 seconds. The ball was thrown with the velocity of

25 m/s
36 m/s
18 m/s
30 m/s

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Physics
Planets are

non-luminous heavenly bodies
luminous heavenly bodies that twinkle
luminous heavenly bodies that do not twinkle
luminous heavenly bodies revolving around a star

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