A simple pendulum, oscillating with time period T, is shown in the figure. Time taken by the bob to move from A to C is t1 and from C to O is t2. Then
AMotion of the bob is uniform with T = 2(t1 + t2)
BMotion of the bob is uniform with T = 4(t1 + t2)
CMotion of the bob is non uniform with T = 2(t1 + t2)
DMotion of the bob is non-uniform with T = 4(t1 + t2).
Select the activity which will produce a different effect than the other three.
AFitting wheels on the bottom of a box to be dragged.
BPutting oil on the hinges of a garage gate.
CTiling a cemented floor.
DReplacing the laminated plastic board with cardboard for toy car racing.
It is do with friction. Option D increases the friction while all other decrease the friction
Which one of the following pairs is wrongly classified?
|Positive effect on the environment||Negative effect on the environment|
|A||Incinerating rubbish in residential areas||Covering opened dust bins left out in the open|
|B||Breeding animals like chicken and sheep for food||Cutting down trees|
|C||Collecting rainwater for watering garden plants||Feeding animals in the wild|
|D||Using recycled material||Leaving unfinished food at the canteen table|
21 students are standing in a line. Deepak is in the middle.
What is his position from left as well as from right?