Question # 1

If there is no change in state of motion, then the body is said be i:

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Rest

Motion

Equilibrium

Rest & motion

At sea level, the height of mercury column in mercury barometer is approximately:

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72 cm

74 cm

76 cm

78 cm

Which expands on heating?

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Water

Steel

Copper

All are true

Which is unitless quantity:

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Mass

Force

Inertia

Momentum

Dogs sweat through:

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Tongue

Legs

Skin

Glands

The SI unit of thermal conductivity is

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Wm K-1

Wm-1K

Wm-1K -1

WmK

Plasma is in ___________ form.

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Moleculer

Kinetic

Static

Ionized

A body is said to be in __________ equilibrium if after a slight tilt return to its previous position:

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Stable

Unstable

Neutral

None

What flower is known as natural thermometer?

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Rose

Barasicca

Crocus

Tulip

The quantities that describe completely by magnitude and direction are.

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Scalar

Vector

Base

Derived

When horse pulls a cart, the action is on the:

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Cart

Earth

Horse

Earth and cart

Time period is reciprocal of:

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Frequency

Cycle

Wavelength

Amplitude

A paper capacitor is usually available in the form of:

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Tubes

Rolled foil

Disc

Plates

To hear echoes, the minimum distance of the obstacle from source of sound should be:

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10m

15m

17m

20m

Static electricity can be generated by:

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Lubrication

Friction

Motion

Smaller the objects

One coulomb is equal to charge of electrons:

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6.25x10^-19

6.25x10¹⁹

6.25x10¹⁸

6.25x10^-18

Which type of energy is converted into mechanical energy in the D.C. Motor.

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Magnetic energy

Heat energy

Electrical energy

Chemical energy

The energy is transferred from one place to another:

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Through matter

Thouth waves

both a and b

None of these

If a charged body is brought near a negatively charged electroscope and the leaves of electroscope diverge, then the body is:

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Positively charged

Negatively charged

Neutral

None of these

Wave equation is defined as:

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f = Tλ

f = V λ

V = 2fλ

V = fλ

Optical fibers work on the principle of:

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Refraction

Reflection

Total internal reflection

Diffraction

First voice signal was transmitted in the form of electrical signal in:

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1870

1875

1876

1880

Which one is renewable source of energy.

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Coal

Uranium

Biomass

Natural gas

The fringe spacing in a double slit experiment can be increased by decreasing.

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Wavelength of light

Width of slits

Slit separation

Distance between the slits and the screen

the length of simple pendulum of time period 1 second is

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2 m

1 m

0.5

0.25 m

The apparent change in the pitch of sound due to relative motion is called.

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Carnot theorem

Interference

Doppler effect

Beats

As we go from pole to equator of earth, the value of 'g'

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Increase

Decrease

Remain constant

Zero

The weight of the body at the centre of earth is

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Maximum

Minimum

Zero

Infinite

Slope of velocity time graph describes a physical quantity called.

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Displacement

Average velocity

Average acceleration

Momentum

Angular velocity determines, How fast or, How slow a body is

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Accelerating

Vibrating

Rotating

Oscillating

Damping is the process in which energy

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Increases

Remains constant

Dissipates

None of these

The instrument which detects the instant as which the external pressure becomes equal to the systolic pressure is called.

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Manometer

Sphygmomanometer

Barometer

Stethoscope

The rate of change of angular velocity is called

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Angular velocity

Angular acceleration

Angular displacement

Angular speed

Life time of metastable states is

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10^-6 sec or more

10^-3 sec or more

10^-5 sec or more

None of these

If the north pole of a magnet moves away from a metallic ring

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Clockwise

Anticlockwise

First clockwise and then anticlockwise

None of above

Magnetic effect of current is used

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To detect a current

To measure a current

In electric motor

All of above

Thermosouple is an arrangement of two different metals:

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Two convert heat energy into electrical energy

To produce more heat

To convert heat energy into chemical energy

To convert electrical energy into heat energy

The conductors having the conductivity of the order of

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Power dissipated in a pure inductor is.

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Large

Small

Infinite

Zero

One weber is equal to:

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N.A ²/m

N.m²/A

N.A/m

N.m/A

Target material used in x-rays tube have following properties.

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High atomic number and high melting pouint

High atomic number and low melting pouint

Low atomic number and low melting pouint

High atomic number only

Which one of the following is polymeric solids

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Glass

Nylon

Copper

Zinc

Half life of Uranium -239 is

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26.5 minutes

24.5 minutes

25.5 minutes

23.5 minutes

if time constant in RC series circuit is small, then capacitor is charged or discharged.

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Slowly

Rapidly

At constant rate

Intermittently