Question # 1

During the steady flow, different streamlines

Choose an answer

cannot across each other

can across each other

either of them

neither of them

The law of conservation of mass gives us the

Choose an answer

equation of continuity

Bernoulli's theorem

both of them

none of them

Which of the following changes at an antinode in a stationary wave?

Choose an answer

Density only

Pressure only

Both pressure and density

Neither pressure nor density

Real gases strictly obey gas law at:

Choose an answer

High pressure and low temperatures

Low pressures and high temperatures

High pressures and high temperatures

None of these

Electromagnetic waves transmit energy equal to

Choose an answer

1/2 mv²

m_oc²

hf/c

hf

An compared to solid matter, a crack or an air bubble allows:

Choose an answer

Great amount of X-rays to pass

Smallast amount of X-rays to pass

Very samall amount of X-rays to pass

Any of these

None of these

The concept of direction is purely:

Choose an answer

Absolute

Relative

Relative to stars always

Relative to the sun always

None of these

In a capacitive circuit

Choose an answer

Current leads voltage by phase ofπ/2

Voltage leads current by phase ofπ/2

Current and voltage are in same phase

Sometime current and sometime voltage leads

The analysis of the distribution of wavelengths of the radiation emitted from a hot body set the foundation of new mechanics, known as

Choose an answer

classical mechanics

Newtonian mechanics

quantum mechanics

statistical mechanics

Synthetic materials fall into the category of

Choose an answer

crystalline solids

amorphous

polymeric solids

all of them

Gas constant per molecule is called:

Choose an answer

Universal gas constant

Stefen's constant

Boltzmann constant

Gravitation constant

To display a digit of EIGHT, the number of ON LED'S are:

Choose an answer

Two

Three

Five

Seven

Eight

Generally a temperature scale is established by

Choose an answer

one fixed point

two fixed point

three fixed point

four fixed point

Which of the following can become a good temporarily magnet

Choose an answer

iron

steel

both of them

none of them

Gaussian surface is always:

Choose an answer

Rectangular

Spherical

Cylinder

Box shape

Any of these

In SHM, there is always a constant ratio between displacement if body and its:

Choose an answer

Velocity

Period

Mass

Acceleration

Which of the following diodes can operate in the reverse biased condition

Choose an answer

photo diode

light emitting diode

photo voltaic cell

none of these

In the theory of dimensional analysis, heat may be properly represented by:

Choose an answer

ML²T^-2

MT^-2

ML^-1T^-1

None of these

Photoelectrons are emitted when ultraviolet light falls on:

Choose an answer

Casium

Silver

Potassium

Any of these

None of these

The artillery shells travel along parabolic paths under the influence of

Choose an answer

magnetic field

electric field

electromagnetic field

gravitational field

The value of resistivity is the least for:

Choose an answer

Copper

Aluminimum

Silver

Tungsten

Iron

In a building, there are 15 bulbs of 40 watts, 5 bulbs of 100 watts, 5 fans of 80 watts and a heater of 1 kilowatt. The voltage of the electric main is 220 volts. The minimum efficiency of the main fuse of the building will be

Choose an answer

0.4 A

11.4 A

9.8 A

10.6 A

The space around the earth within it exerts a force of attraction on other bodies of known as:

Choose an answer

Nuclear field

Conservative field

Electric field

Gravitational field

A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called

Choose an answer

dead beat galvanometer

stable galvanometer

shunt galvanometer

sensitive galvanomter

Examples of polymeric substances are:

Choose an answer

Plastic

Synthetic rubbers

Zirconia

All of these

Both (A) and (B)

The principle characteristics of an ideal standard are

Choose an answer

Inaccessible and Invariable

Accessible and Invariable

Accessible and Variable

None of these

A car is turning around a corner at 10 m/sec as it travels along an arc of a circle. If value of centripetal acceleration is 10 m/sec²in this case, find radius of the circular path:

Choose an answer

1 m

5 m

10 m

15 m

The A.M. transmission frequency range from

Choose an answer

500-1000 KHz

540-1600 KHz

300-490 KHz

900-2040 KHz

The Einstein's changes in length, mass and time are not observed in common life because

Choose an answer

We dont observer then seriously

The masses are too large

Their speed is too small than the speed of right

All of the above

10 c.c. each of oxygen and hydrogen are kept in separate flasks. Then which of the following relations is correct?

Choose an answer

Each have same number of molecules

Don't have same number of molecules

Can't be predicted

None

Blood vessels can be stretch like rubber, therefore they are

Choose an answer

rigid

hard

very thick

not rigid

The materials in which there are plenty of free electrons for electrical conduction are known as

Choose an answer

conductors

insulators

semi-conductors

all of them

More Classes

Other Links

ECAT Pre General Science Physics Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer