Indian army has published the notification for SSC Tech 56 men and SSC Tech 27 women for the course commencing at OTA Chennai from April 2021
The time period of a charged particle undergoing a circular motion in a uniform magnetic field is independent of its
Speed
Mass
Charge
Magnetic induction
A bulb is rated for 100 W, 110 V. How much resistance should be connected in series so that bulb delivers same power at 230 V?
512 Ω
408 Ω
376 Ω
337 Ω
A star is emitting yellow light. If it is accelerated towards earth then to an observer on earth, it will appear
Shinning yellow
Gradually changing to violet
Gradually changing to red
Unchanged
If a running boy jumps on a rotating table, then which of the following is conserved
Linear momentum
K.E
Angular momentum
None of these.
In which of the following examples, work done is negative?
Work done by the force of gravity on a moving aero-plane
Work done by a force of gravity on a ball thrown upwards
Work done by a force of gravity on a freely falling objects
Work done by a force of gravity on a satellite revolving around the earth
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