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Gravitational force shares a common feature with electromagnetic force. In both cases, the force is -
(a) between massive and natural objects
(b) between charged objects
(c) a short range
(d) a long range

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NDA Other Question
A particle is moving freely. Then its -
(a) kinetic energy is always greater than zero
(b) potential energy is greater than zero and kinetic energy is less than zero
(c) potential energy is less than zero and kinetic energy is greater than zero
(d) potential energy is zero and kinetic energy is less than zero The spread in colours in a ranbow on sky is primarily due to -
(a) dispersion of sunlight
(b) reflection of sunlight
(c) refraction of sunlight
(d) total internal reflection of sunlight