## Q1 Five equal forces of 100N are applied at a point and lying in one plane. If the angle between them is equal, then the resultant force is?

• (a) 10N
• (b) 20N
• (c) 2\sqrt{10}
• (d) 0 N

• (d) 0 N

## Q2  Which one is true about null vector

• (a) It has zero magnitude
• (b) It has no specific direction
• (c) Both a and b
•  d) None of the above

• (c) Both a and b

## Q3  Minimum number of unequal vectors which can give zero resultant is

• ( a) 2
• (b) 4
• (c) 3
• (d) None of the above

• (c) 3

## Q4 The vectors A and B are such that their sum is equal to their difference. The angle between these two vectors will be

• a) 90^{0}
• b) 0^{0}
• c) 40^{0}
• d) 180^{0}

• a) 90^{0}

• a) True
• b) False

• a) True

• a) True
• b) False

• b) False

## Q7  A moves at a speed of 65 km/hr while B who is behind A moves at the speed of 80 km/hr. what is the relative velocity of B w.r.t. A..

• a) 60 km/hr
• b) 80 km/hr
• c) 145 km/hr
• d) 15 km/hr

• d) 15 km/hr Using Formula for relative velocity = VB-VA, 80 – 65 = 15 km/hr

• a) 1 km/hr
• b) 5 km/hr
• c) 4 km/hr
• d) 3km/hr

• b) 5 km/hr

## Q9.  A bus is moving towards east and car is moving toward north with same speed of 50 km/hr. What is the direction of motion of car to the passenger in the bus?

• a) 30^{0}
• b) 0^{0}
• c) 60^{0}
• d) 45^{0}

• d) 45^{0}

## Q10 A man can protect himself from rain by holding his umbrella at an angle θ =

• a) 30^{0}
• b) 0^{0}
• c) 60^{0}
• d) None of the above

• d) None of the above