(4) If the masses of the two particle and distance between them is doubled, the force of gravitational attraction will

1. double
2. remain same
3. halve
4. become one fourth

(5) Forces and are acting at a point. The resultant force will be of magnitude

1. 3 N
2. 4 N
3. 5 N
4. 

(6) Two forces of same magnitude P are having an angle of 60⁰ between them, the magnitude of their resultant will be

1. P
2. 2P
3. 
4.