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 orbital speed of Jupiter is
Greater than the orbital speed of the earth
Lesser than the orbital speed of the earth
Zero
Equal to the orbital speed of the earth
What can be used for converting mechanical energy into electrical energy
A) DC dynamoB) AC dynamoC) motorD) transformer
Which is correct?
A and D
C and B
Only c
A and B
The following functions of time represent sin ωt – cos ωt
Simple harmonic Motion
periodic but not simple harmonic Motion
non-periodic motion
none of the above
An object moving in (upward) direction opposite to the gravitational force of earth performs :
Accelerated motion
Motion with constant velocity
Oscillations
Retarded motion
In which case does the potential energy decrease?
1) On compressing a spring
2) On stretching a spring
3) On moving a body against gravitational force
4) Air bubble is rising in water
Select the correct answer.
1 and 2
Only 4
3 and 4
All of these
