Question 1

Radioactive decay is a

Accepted Answer

A) random process 
B) non-spontaneous process 
C) regular process 
D) massive process 
A) random process 
B) non-spontaneous process 
C) regular process 
D) massive process A

Question 2

Forces acting on an object are balanced if resultant force on object is

Accepted Answer

A) constant 
B) zero 
C) increasing 
D) decreasing 
A) constant 
B) zero 
C) increasing 
D) decreasing B

Question 3

Energy given to nucleus to dismantle it increases the

Accepted Answer

A) kinetic energy of individual nucleons 
B) mechanical energy of individual nucleons 
C) potential energy of individual nucleons 
D) chemical energy of individual nucleons 
A) kinetic energy of individual nucleons 
B) mechanical energy of individual nucleons 
C) potential energy of individual nucleons 
D) chemical energy of individual nucleons C

Question 4

Acceleration due to gravity on moon is

Accepted Answer

A) 9.9 m s-2 
B) 9.5 m s-2 
C) 6.1 m s-2 
D) 1.6 m s-2 
A) 9.9 m s-2 
B) 9.5 m s-2 
C) 6.1 m s-2 
D) 1.6 m s-2

Question 5

500 MW can be written in powers of 10 as {{}}

Accepted Answer

A) 500 × 106 
B) 500 × 103 
C) 500 × 10-6 
D) 500 × 109 
A) 500 × 106 
B) 500 × 103 
C) 500 × 10-6 
D) 500 × 109

Question 6

Density of air is

Accepted Answer

A) 1⁄8 of water 
B) 1⁄7 of water 
C) 1⁄45 of water 
D) 1⁄800 of water 
A) 1⁄8 of water 
B) 1⁄7 of water 
C) 1⁄45 of water 
D) 1⁄800 of water

Question 7

Until a force acts on a body, it's velocity is

Accepted Answer

A) zero 
B) constant 
C) increasing 
D) decreasing 
A) zero 
B) constant 
C) increasing 
D) decreasing

Question 8

Point where entire weight of an object acts is

Accepted Answer

A) edge 
B) center of gravity 
C) central point 
D) can be anywhere in body 
A) edge 
B) center of gravity 
C) central point 
D) can be anywhere in body

Question 9

If there is no net force acting on body, then its acceleration is

Accepted Answer

A) zero 
B) constant 
C) increasing 
D) decreasing 
A) zero 
B) constant 
C) increasing 
D) decreasing

Question 10

1 u is equal to {{}}

Accepted Answer

A) 1.660 × 10-27 kg 
B) 2 × 10-27 kg 
C) 3 × 10-27kg 
D) 5 × 10-27 kg 
A) 1.660 × 10-27 kg 
B) 2 × 10-27 kg 
C) 3 × 10-27kg 
D) 5 × 10-27 kg

Question 11

Force applied on a body and its acceleration are

Accepted Answer

A) inversely related 
B) directly related 
C) not related at all 
D) inversely proportional 
A) inversely related 
B) directly related 
C) not related at all 
D) inversely proportional

Question 12

Force provided by breaking system of train if it is decelerating at rate of -3 m s -2 and having mass 10,000 kg is {{}}

Accepted Answer

A) -30,000 N 
B) -40,000 N 
C) -50,000 N 
D) 30,000 N 
A) -30,000 N 
B) -40,000 N 
C) -50,000 N 
D) 30,000 N

Question 13

In gamma emission, the change in nucleon number is

Accepted Answer

A) zero 
B) definite 
C) increase by 1 
D) decreases by 1 
A) zero 
B) definite 
C) increase by 1 
D) decreases by 1

Question 14

Acceleration of a rocket having mass 5000 kg and resultant force acting on it is 200,000 N is {{}}

Accepted Answer

A) 50 m s-2 
B) 56 m s-2 
C) 70 m s-2 
D) 40 m s-2 
A) 50 m s-2 
B) 56 m s-2 
C) 70 m s-2 
D) 40 m s-2

Question 15

Base unit among following is

Accepted Answer

A) Newton 
B) Joule 
C) Candela 
D) Watt 
A) Newton 
B) Joule 
C) Candela 
D) Watt

Question 16

Another name for force of gravity acting on an object is

Accepted Answer

A) friction 
B) air resistance 
C) weight 
D) mass 
A) friction 
B) air resistance 
C) weight 
D) mass

Question 17

An object immersed in fluid experiences an upward force named

Accepted Answer

A) viscosity 
B) drag force 
C) up thrust 
D) friction 
A) viscosity 
B) drag force 
C) up thrust 
D) friction

Question 18

When two objects are in contact, they exert forces in

Accepted Answer

A) opposite direction 
B) same directions 
C) can be both A and B 
D) perpendicular direction 
A) opposite direction 
B) same directions 
C) can be both A and B 
D) perpendicular direction

Question 19

1 N is equal to {{}}

Accepted Answer

A) 1 kg m s-2 
B) 10 kg m s-1 
C) 10 kg m s-2 
D) 100 kg m s-2 
A) 1 kg m s-2 
B) 10 kg m s-1 
C) 10 kg m s-2 
D) 100 kg m s-2

Question 20

A force similar to friction is

Accepted Answer

A) forward force 
B) pulling force 
C) drag force 
D) contact force 
A) forward force 
B) pulling force 
C) drag force 
D) contact force

Exam 18: Physics Forces, Acceleration, and Units

Radioactive decay is a

Forces acting on an object are balanced if resultant force on object is

Energy given to nucleus to dismantle it increases the

Acceleration due to gravity on moon is

500 MW can be written in powers of 10 as {{}}

Density of air is

Until a force acts on a body, it's velocity is

Point where entire weight of an object acts is

If there is no net force acting on body, then its acceleration is

1 u is equal to {{}}

Force applied on a body and its acceleration are

Force provided by breaking system of train if it is decelerating at rate of -3 m s -2 and having mass 10,000 kg is {{}}

In gamma emission, the change in nucleon number is

Acceleration of a rocket having mass 5000 kg and resultant force acting on it is 200,000 N is {{}}

Base unit among following is

Another name for force of gravity acting on an object is

An object immersed in fluid experiences an upward force named

When two objects are in contact, they exert forces in

1 N is equal to {{}}

A force similar to friction is

Physics Force, Acceleration, and Projectile Motion

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Force provided by breaking system of train if it is decelerating at rate of -3 m s ^-2 and having mass 10,000 kg is {{}}