Question # 1

The centre of gravity of uniform triangle is:

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Point of intersection of medians

On its vertex

On middle point of its axis

Point of intersection of diagonal

The method used for addition of non-parallel forces is.

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Algebraic

Head to trail rule

Mathematical

Nil

The net torque acting on a rotating body with uniform speed is:

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0

1

2

5

The formula of torque is:

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L= F x E

E = F x t

t = F x L

E = F x L

A body is in equilibrium when its:

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Acceleration in uniform

speed in uniform

Speed and Acceleration are uniform

Acceleration is Zero.

If Fx and Fy are rectangular components of a vector F, then the magnitude of vector F is:

[LHR-04 1st G]

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At what angle sin𝜽 and cos𝜽 has same values:

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30^o

45^o

60^o

90^o

It base of a right angled triangle is 3 cm and its perpendicular is 3 cm.Then its hypotenuse will be

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2 cm

4 cm

6 cm

5 cm

The value of sin θ at an angle of 60o is

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0.5

0

0.707

0.866

The resultant vector of given vectors A and B is

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A couple is formed by

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Two forces perpendicular to each other

Two like parallel forces

Two equal and opposite forces in the same line

Two equal and opposite forces not in the same line

The vector which has the same effect as the combined effect of vectors:

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Negative vector

The vector

Resultant vector

Zero vector

Two equal but unlike parallel forces having different lines of action produce:

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a Torque

a couple

Equilibrium

Netural equilibrium

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Physics 9th Class English Medium Unit 4 Online Test MCQs With Answers

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