Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Physics Motion in a Straight Line Acceleration
A ball is dropped in a lift moving up with an acceleration a. What will be effective acceleration of the ball in lift frame if gravitational acceleration of the earth is 'g'?
1
aeff = a + g
2
aeff = a - g
3
aeff = a × g
4
More than one of the above
5
None of the above