Question # 1

A body of mass 2 kg attached to a spring is pulled to a distance of 4 cm What will be the value of spring constant K.

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490 N m-1

980 N m-1

1260 N m-1

1960- N m-1

The equation of parabola is.

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y= bx - ax2

x = by - ay2

y = ax + bx2

x = a -by2

A body is thrown vertically upward with initial velocity 9.8 ms-1 it will reach the height.

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4.9 m

19.9 m

29.4 m

49.2 m

Which one of the following is not a dimensionless quantity.

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Radian

pi

Decibel

Force

A stone is whirled in a vertical circle at the and of a string when the stone is at the highest position, tension in the string is

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Maximum

Zero

Equal to weight of the stone

Less than weight of the stone.

A 100 kg box is pulled 10 m across a frictionless horizontal surface by a 50 N force The change in the P.E. of the box a

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0 J

2 J

20 J

50 J

A body of mass 2 kg is suspended from the celling of an elevator moving up with an acceleration 'g' its apparent weight in the elevator will be.

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9.88 N

19.8 N

29.4 N

39. 2 N

Inertial mass and gravitational mass are

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Opposite

Proportional

Weights

Inversely proportional

If the earth stopped rotating the weight of objects at either pole would.

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Be grater

Be less

Vary with altitude

Be the same before

The work required to lift a ball of mass 'm' from the surface of the earth to an infinite distance is

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Absolute P.E. of the body

P.E of the body

K.E. of the body

Chemical energy of the body

The dimensions of force are.

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[MLT-2]

[MLT-1]

[M,-1T-2]

[M-2T-2]

The are between the velocity time graph and the time axis is numerically equal to.

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Distance moved by the object

Speed of the object

Velocity of the object

Acceleration of the object

If the resultant of all the forces acting on a body is zero then the body is in

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Translation equilibrium

Rotational equilibrium

Equilibrium

Dynamic equilibrium

Two vectors of magnitudes 5 N and 7 N respectively are acting on a body if the angle between them is a right angle, their resultant vector will be.

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2 N

4 N

6 N

8 N

Express the quantity 225 x 10^-6 s using prefixes.

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0.225 micro second

2.25 micro second

225 micro second

2,25 neno second

Periodic motion is a motion.

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Under the influence of an elastic restoring force

That repeats it self in equal intervals of time

Back and forth over the same path

With constant acceleration

When a force is applied on a body several effects are possible which of the following effect could not occur.

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The body speeds up

The body changes direction

The pressure on the body increases

The mass of the body decreases

The force of gravity between two objects does not depend upon the.

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Constant of gravitation

Separation

Product of their masses

Sum of their masses

What are the dimensions of coefficient of velocity of

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[MLT-1]

[ML-1T-1]

[ML-2T-1]

[MLT-2]

Which of the following quantity has a unit that can be expressed in terms of just two different SI base units.

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Area

Change

Electric current

Length

What must be changing when a body is accelerating uniformly.

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Force acting on the body

Mass of the body

Speed of the body

Velocity of the body

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