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### 1.The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.

• AEqual to
• BLess than
• CGreater than
• DNone of these

Equal to

Explanation:

• A50
• B100
• C200
• D400

100

Explanation:

### 3.The time of flight of a projectile on downward inclined plane depends upon

• AAngle of projection
• BAngle of inclination of the plane
• CBoth (A) and (B)
• DNone of these

Both (A) and (B)

Explanation:

### 4.Center of gravity of a thin hollow cone lies on the axis at a height of

• AOne-fourth of the total height above base
• BOne-third of the total height above base
• COne-half of the total height above base
• DThree-eighth of the total height above the base

One-third of the total height above base

Explanation:

Center of gravity of a thin hollow cone lies on the axis at a height of One-third of the total height above base.

### 5.According to principle of transmissibility of forces, the effect of a force upon a body is

• Amaximum when it acts at the center of gravity of a body
• Bdifferent at different points in its line of action
• Cthe same at every point in its line of action
• Dminimum when it acts at the C.G. of the body

the same at every point in its line of action

Explanation:

• A2mr²/3
• B2mr²/5
• Cmr²
• Dmr²/2

2mr²/5

Explanation:

### 7.A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve

• ACircular arc
• BParabola
• CHyperbola
• DElliptical

Parabola

Explanation:

### 8.The maximum frictional force which comes into play when a body just begins to slide over another surface is called

• ALimiting friction
• BSliding friction
• CRolling friction
• DKinematic friction

Limiting friction

Explanation:

• ASinθ
• BCosθ
• CTanθ
• DCosecθ

Sinθ

Explanation:

### 10.The forces, whose lines of action are parallel to each other and act in the same directions, are known as

• ACoplanar concurrent forces
• BCoplanar non-concurrent forces
• CLike parallel forces
• DUnlike parallel forces

Like parallel forces

Explanation:

• Akg m
• Bkcal
• CWatt
• DWatt hours

Watt

Explanation:

• AMv2
• BMgv2
• C0.5 mv2
• D0.5 mgv2

0.5 mv2

Explanation:

• Ah/2
• BJ/3
• Ch/6
• Dh/4

h/4

Explanation:

### 14.Which of the following are vector quantities?

• ALinear displacement and Angular displacement
• BLinear velocity and Angular velocity
• CLinear acceleration and Angular acceleration
• DAll of these

All of these

Explanation:

### 15.Which of the following is the example of lever of first order?

• AArm of man
• BPair of scissors
• CPair of clinical tongs
• DAll of the above

All of the above

Explanation:

### 16.A couple produces

• ATranslatory motion
• BRotational motion
• CCombined translatory and rotational motion
• DNone of the above

Rotational motion

Explanation:

### 17.The resultant of the following three couples 20 kg force, 0.5 m arm, +ve sense 30 kg force, 1 m arm, -ve sense 40 kg force, 0.25 m arm, +ve sense having arm of 0.5 m will be

• A20 kg, -ve sense
• B20 kg, + ve sense
• C10 kg, + ve sense
• D10 kg, -ve sense

20 kg, -ve sense

Explanation:

### 18.A smooth cylinder lying on a __________ is in neutral equilibrium.

• ACurved surface
• BConvex surface
• CHorizontal surface
• DNone of these

Horizontal surface

Explanation:

• Bbd³/12
• Cdb³/36
• Dbd³/36

bd³/12

Explanation: