NDA Government Jobs Exams

An iron ball and a wooden ball of the same radius are released from a height 'H' in vacuum. The time taken to
reach the ground will be -
(A) more for the iron ball (B) more for the wooden ball
(C) equal for both (D) in the ratio of their weights

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NDA Other Question

The mirror used for the head light at a car is -
(A) spherical concave (B) plane
(C) cylindrical (D) parabolic concave Which one among the following transitions is associated with the largest change in energy in hydrogen atom
(A) n = 5 to n = 3 (B) n = 2 to n = 1
(C) n = 3 to n = 2 (D) n = 4 to n = 2