Question # 1

The wave form of SHM is a

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Sine wave

Cosine wave

Square wave

Electromagnetic wave

The relation between horse power and watt is.

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1 hp = 546 watts

1 hp = 746 watts

1 hp = 946 watts

1 hp = 1000 watts

The weight of a man in an elevator moving down with an accelerating of 9.8 m s-2 will be come

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Half

Zero

9.8 N

Double

A particle performs SHM of amplitude 0.020 and frequency 2.5 Hz. What is its maximum speed.

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0.050 m s-1

0.125 m s-1

0.314 m s-1

0.75 m s-1

Inertial mass and gravitational mass are

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Opposite

Proportional

Weights

Inversely proportional

A force of 50 N acts on a body for 10 s What will be change in momentum.

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5 Ns

500 Ns

200 Ns

800 N s

The international acceptable scientific notation of a number 123.4 is

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12.34 x 10¹

1.234 x 10²

1.234 x 10³

0.123 x 10³

If the presence of air friction, the path of a projectile appears as.

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Straight line

Parabola

Hyperbola

zig zag

The fundamental quantities which form the base of the SI are.

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mass, energy and time

mass, force and time

mass, length and time

mass , length and time

The maximum height reached by a projectile with a velocity of 14 m s-1 at an angle of 30 ^owith the horizontal is.

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1.5 m

2.5 m

1 m

2 m

Temperature changes when two balls collide which one of the following is conserved.

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Angular momentum

linear momentum

Velocity

Kinetic energy

The resultant magnitude of two vectors

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Is always positive

Can never be zero

Can be negative positive or zero

Is usually zero

The centre of gravity of a rectangular or parallel gram shaped plate is.

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At the centre

At the intersection of diagonals

At the intersection of medians

At the axis of rotation

Which quantity has different base units from the other three.

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Density x volume x velocity

Rate of change of momentum

The Young's modulus x area

Weight

If average acceleration is equal to instantaneous acceleration then the body's said to be moving.

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Negative acceleration

Positive acceleration

uniform acceleration

Variable acceleration

What is the number of degree of freedom of an oscillating simple gravity pendulum

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1

2

3

4

If 'p' is the momentum of an object of mass 'm' the expression p2/m has base units identical to.

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Power

Force

Velocity

Energy

The force of friction that comes into action after the motion has started

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Static friction

Dynamic friction

Friction only

Limiting friction

The centre of the sun produces a large amount of energy what is the source of this energy.

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Chemical reaction

Nuclear fission

Nuclear fusion

Radioactive decay

The acceleration due to gravity

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Has the same value everywhere in space

Has the same value every where on the earth

varix with altitude on the earth

Is great her on the moon owing to its smaller diameter

A simple pendulum suspended from the celling of a lift has a time period T when the lift falls freely the time period of the pendulum will become

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Zero

T/9.8

9.8 T

Infinity

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