Physics MCQs for Class 9 with Answers
If Fx and Fy are rectangular components of vector F, then its direction is determined by the relation
θ = sin-1 Fv/Fx
θ = tan-1 Fx/Fy
θ = tan Fx/Fy
θ = tan Fy/Fx
The value of sin θ at an angle of 60o is
0.5
0
0.707
0.866
The right angle triangle length of bas is 4 cm and its hypotenuse is 5 cm, then length of perpendicular is:
1 cm
3 cm
9 cm
20 cm
The number of forces that can be added by head to tail rule are
2
3
4
Any Number
The unit of torque is:
N
Nm
m
m/n
After tilting if body come back to its original position then the body is in:
Stable equilibrium
unstable equilibrium
Neutral equilibrium
Equilibrium
Turning effect of a force is called:
Torque
Moment
Couple
Torque and momentum
The value of tan 45ois:
0.5
1.732
1
0.5777
__________ forces have opposite direction:
Unlike parallel
Parallel
Like parallel
None of these
In a right angle triangle base is 4 cm and perpendicular is 3 cm length of diagonal will be:
2 cm
5 cm
4 cm
6 cm
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