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Physics Class 9 - Important MCQs - 17

Physics Class 9 - Important MCQs - 17

1. Kinetic energy

1) W/T
2) mv2
3) potential energy
4) mgh
2. Work

1) W/T
2) mv2
3) Fxs
4) mgh
3. Centripetal acceleration

1) 6x1024 kg
2) v2/ r
3) 6.67x10-11 Nm2/kg2
4) 5500 kg /m3
4. Centripetal

1) directed towards center
2) Centrifuge
3) telecommunication
4) Newton
5. Stress

1) MA
2) Newton
3) mg
4) F/A
6. F

1) ma
2) Global satellites
3) GM/(R+h)2
4) circular motion
7. Force

1) Newton
2) 103
3) 106
4) 106
8. 1st condition of equilibrium

1) Equal ? apposite parallel forces
2) ?r = 0
3) ?F=0
4) F x r
9. Same direction of forces

1) Meter
2) Fixed circles
3) right hand rule
4) Like parallel forces
10. Cos0o

1) 0.866
2) 1
3) 0.5
4) zero
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