NDA Government Jobs Exams

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

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NDA Other Question
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 A car is moving with a uniform speed. However its momentum is changing. Then the car -
(a) may be on an elliptical path
(b) is moving on a straight path without acceleration
(c) is moving on a straight path with acceleration
(d) is moving without any acceleration