Question # 1

The direction of angular acceleration is

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Along the axis of rotation

Perpendicular to the axis of rotation

Opposite to axis of rotation

None of these

The dimensional of potential energy per unit volume are same as that of.

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Work

Pressure

Speed

Density

Before the launch of a rocket the mass of fuel of the rocket is approximately consists of.

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60%

50%

80%

100%

Stars moving away from Earth show a

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Green shift

Blue shift

Red shift

Yellow shift

If the time period of simple pendulum is 2 seconds its frequency will be.

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1 Hz

0.5 Hz

1.5 Hz

2 Hz

If a body is moving in the counter clockwise direction the direction of angular velocity will be

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Toward the centre

Away from the centre

along the linear velocity

Perpendicular to both radius and linear velocity

How many orbiting satellites from the Global positing system.

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3

12

24

22

Direction of a vector in space requires

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Two axis

Three axis

Four axis

Both a and b

What would encourage trade between two countries

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Different tax system

Frontier checks

National currencies

reduced tariffs

The accepted value for speed of light in vacuum

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2.99 x 10⁸m - sec^-1

2.99 x 10⁶m - sec^-1

2.99 x 10⁸km - sec^-1

2.99 x 10⁸m - h^-1

Rate of change of displacement is called

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Speed

Velocity

Kinetic energy

None of these

When one mirror of a Michelson interferometer is moved a distance of 0.5 mm, 2000 fringes and observed, The wavelength of light used is.

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5000 m

50000 A^o

500 cm

2000 A^o

In rotational motion the torque is equal to rate of change of

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Angular velocity

Linear momentum

Angular momentum

Angular acceleration

A stationary waves is established din a string which vibrates in four segments at a frequency of 120 Hz, Its fundamental frequency is.

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15 Hz

30 HZ

60 Hz

480 Hz

When the body moves with constant acceleration the velocity time graph is

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Parabola

Hyperbola

Straight line

Curve

For 2.450 no. of significant digits.

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2

1

3

4

The final image formed by a simple microscope.

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Virtual and inverted

Real and erected

Virtual and erected

Real and inverted

Centripetal force perform

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Maximum work

Minimum work

Negative work

No work

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