If radius of earth’s orbit is made 1/4, the duration of a year will become
Options
(a) 4 times (b) 8 times (c) 1/4 times (d) 1/8 times
Correct Answer:
1/8 times
Explanation: […]
The radius of gyration of a solid sphere of radius r about a certain axis is r. The distance of this axis from the centre of the sphere is
Options
(a) r (b) […]
Two strings A and B, made of same material are stretched by same tension. The radius of string A is double the radius of B. A transverse wave travels on A with speed Va and […]
Two particles are oscillating along the same line with the same frequency and same amplitude. They meet each other at a point mid way between the mean position and extreme position while going in the […]
540 g of ice at 0° C is mixed with 540 g of water at 80° C. The final temperature of the mixture in °C will be
Options
(a) 40° C (b) 79.9° […]
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