Question # 1

What flower is known as natural thermometer?

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Rose

Barasicca

Crocus

Tulip

If the acceleration is 10 m/s2 and mass 10kg:

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F = 99N

F = 100 Kg

F = 100 m/s2

F =100 N

Which of following units is equal to Kgm² s^-2

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Newton

Joule

Watt

Coloumb

Mercury is denser than water by time:

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13,6

10

15

20

For balancing the beam balance, pointer must be at.

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Extreme position

Zero

The right side

The left side

It is easy to turn a steering wheel by applying a:

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Torque

Force

Couple

Momentum

If the weight body is greater then tension then body will.

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Move upward

move downward

not move

None

The value of g on moon's surface is 1.6 ms^-2. What will be the weight of a a 100 kg body on the surface of the moon?

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100 N

160 N

1000 N

1600 N

The acceleration produced in a moving body is always in the direction of applied

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Velocity

Force

Speed

Momentum

The weight of a body of mass 20 kg is:

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2 N

10 N

20 N

200 N

Rate of change of velocity is known as.

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Acceleration

Speed

Velocity

Distance

Electric current in conductors is due to the flow of:

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Positive ions

Negative ions

Positive charge

Free electrons

Focal length for concave mirror is :

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-ve

+ve

same

none of these

Bets can hear sound of frequency up to:

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100,000 Hz

25000 Hz

120,000 Hz

1000 Hz

The product of frequency and time period is equal to:

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v

0

1

L

In C.R.O grid is always connected with potential:

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Negative

Positive

High positive

Zero positive

Totally reflecting prism turns the incident ray at an angle of:

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90^o

60^o

75^o

45^o

Which is an example of a longitudinal wave?

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Sound wave

Light wave

Radio wave

Water wave

Which instrument is used to detect current:

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Galvanometer

Voltmeter

Ammeter

Electroscope

The oscillations of a system in the presence of which force are called damp oscillations:

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Resistive force

Attractive force

Coulomb force

Both a and b

A current carrying conductor produces a field around it is called:

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Electric field

Magnetic field

Both a and b

None of these

1 bel=

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0.1 dB

10 dB

100 dB

0.01 dB

In red light is used as compare to blue light then fringe spacing.

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Decreases

Remain same

Increases

Becomes zero

the velocity of sound at 0 ^oC is 332 ms-1, the velocity of sound at 10 ^oC will be

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337.1 ms-1

338.1 ,ms-1

342.1 ms-1

328.1 ms-1

The Carnot cycle can be shown by which graph

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P - T graph

P - V Graph

V- T graph

PV -T graph

The final image formed by a simple microscope.

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Virtual and inverted

Real and erected

Virtual and erected

Real and inverted

Huygen's proposed, light energy travels in space from source in

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1578

1678

1778

1868

The wavelength of fundamental note in one end closed pipe in term of length 'l' of pipe is.

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4 l

2l

l

1/4 l

Venturimeter is used ot measure.

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Speed of fluid

Pressure of fluid

Volume of fluid

Mass of fluid

An ideal reversible heat engine has

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100% efficiency

Highest efficiency

80%

90%

An athlete runs with a speed of 12 ms-1. Determine the longest jump he can undertake.

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12 m

14.4 m

24 m

16.2 m

When a fore of 100 N is acting on an object along x-axis then its vertical component will be.

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50 N

0 N

25 N

10 N

Average acceleration is a

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Scalar quantity

Vector quantity

(-) ve quantity

None of these

The stopping potential for a certain metal is 10 volts. Thus work function for the cathode is.

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10 J

1.6 X 10^-18 J

1.6 X 10^-19 J

1.6 X 10³⁰ J

Which one has greater cone of impurity among all:

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Emitter

Base

Collector

All are pure

In Wilson cloud chamber, ß-particles leave

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Thin and continuous tracks

Thick and continuous tracks

No tracks

Thin and discontinuous tracks

A material which is insulator at 0 K and conduct at room temperature is.

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Silver

Lead

Germanium

Polythene

How many neutrons are there in the nuclide Zn⁶⁶?

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22

30

36

66

The SI unit of resistivity is.

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Ohm m-2

Ohm m-1

Ohm m

Ohm

The device which allows only the continuous flow of AC through it is.

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Inductor

Battery

Thermistor

Capacitor

The negative of the potential gradient is

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Electrostatic force

Electromotive force

Potential difference

Electric field intensity

Mutual induction has a practical role in the performance of the.

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Radio choke

Transformers

A.C. Generator

D.C. Generator

The existence of positron in 1928 was predicted by

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Anderson

Dirac

Chadwick

Plank

The potential difference between the head and tail of an electrical to

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600 Volt

700 Volt

800 Volt

900 Volt