11)

The scalar product A•A =

Class 11 Physics

A)

Both a and b

B)

A

C)

A2

D)

None

12)

If the vectors A and B are perpendicular to each other then

Class 11 Physics

A)

Both a and b

B)

A•B = 0

C)

A•B = 1

D)

None

13)

If the scalar product A•B = 0 then

Class 11 Physics

A)

Both a and b

B)

Vectors A and B are perpendicular

C)

Vectors A and B are parallel

D)

None

14)

The change in kinetic energy of the particle is equal to

Class 11 Physics

A)

Both a and b

B)

Work done on it by the net force

C)

Work done in it

D)

None

15)

Work done is given by

Class 11 Physics

A)

W = FD

B)

W = F×d

C)

W = F•d

D)

None

16)

Work down is the scalar product of

Class 11 Physics

A)

Both a and b

B)

Force and distance

C)

Force and displacement vectors

D)

None

17)

The kinetic energy of the object is given by

Class 11 Physics

A)

mv2

B)

1/2mv2

C)

1/2mv

D)

Mv

18)

The potential energy of the object is given by

Class 11 Physics

A)

1/2mv2

B)

Mgh

C)

Mg

D)

Mv

19)

The total mechanical energy of a system is conserved if the forces doing work in it are ____

Class 11 Physics

A)

Both a and b

B)

Conservative

C)

Not conservative

D)

None

20)

The spring force is a

Class 11 Physics

A)

Both a and b

B)

Conservative force

C)

Not conservative force

D)

None