Question # 1

1 KWh =

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3.6 x 10³K

3.6 x 10⁶K

3.6 x 10⁹J

3.6 x 10¹²J

the final image obtained by astronomical telescope is.

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Erect

Virtual

Magnified

All of these

Rate of change of velocity is called

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Speed

Acceleration

Displacement

Torque

The law of conservation of energy gives us

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Equation of continuity

Stock's law

Bernoulli's equation

Viscosity

The distance between two consecutive trough is called.

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Displacement

Amplitude

Wave length

Wave front

If amplitude of a simple pendulum is increased by 4 times the time period will be.

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Four times

Half

Same

Two times

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

If an object is placed with in the focal length of a convex lens, its image is formed.

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Real

Inverted

Virtual

Smaller than object

The weight of an object an elevator moving down with an acceleration of 9.8 m/s2 will becomes

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Half

Double

Unchanged

Zero

The horizontal range of a projectile of 30^owith horizontal is same at an angle.

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40^o

45^o

90^o

60^o

The SI units of flow rate are.

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m2s-1

m3s-2

m3s-1

m2s-2

For normal adjustment what is the length of astronomical telescope if focal lengths of astronomical telescope if focal lengths of objective and eye piece are 100 cm 20 cm respectively.

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10 cm

20 cm

5 cm

120 cm

A phenomenon by which energy is dissipated from the oscillating system is called.

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Forced oscillation

Free oscillation

Damping

Simple harmonic motion

The final image formed by a simple microscope.

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Virtual and inverted

Real and erected

Virtual and erected

Real and inverted

The resultant of two forces 30 N and 40 N acting parallel to each other is.

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30 N

40 N

70 N

10 N

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

Light entering rom air glass does not change in its.

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Frequency

Wavelength

Velocity

Direction

If an object lies at focus point F in front of a converd lens, its image is formed at.

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2F

F

3F

Infinity

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