Question # 1

In which hot liquid can remains hot:

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Glass

Lead

Thermos

Hot pot

If a body is at a depth of 'h'form the liquid surface of density 'p' , then

the liquid pressure p[' in that body is:

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P = mgh

P = pgh

P = 2mgh

P = mag

In which of the following state molecules don not leave their position?

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Solid

Liquid

Gas

Plasma

Rooms are heated using gas heaters by

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Conduction only

Convection and radiation

Radiation only

Convection only

The mass of a body

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Decreases when accelerated

Increases when accelerated

Decreases when moving with high velocity

None of the above

The value of gravitational acceleration when a body is moving in downward direction is.

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10 ms^-1

10 ms^-2

10 m

-10 ms

Two bodies of masses m₁ and m₁ attached to the ends of an inextensible string passing over a frictionless pulley such that both move vertically. The acceleration of the bodies is:

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m1 x m₂ / m₁ + m₂ g

m₁ - m₂ / m₁ + m₂ g

m₁ + m₂ / m₁ - m₃ g

None of these

The condition of equilibrium are:

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2

3

4

5

See breeze blows form sear to land during:

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day

night

after noon

morning

The quantities that are completely decribed by only magnitude are.

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vector

Scalar

Base

Derived

Which of the following is the unit of momentum?

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Nm

kgms^-2

Ns

Ns^-1

X=A.B. This equation is used for which operation:

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AND

OR

NOT

NAND

The basic operations performed by a computer are.

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arithmetic operations

non arithmetic operations

logical operation

both a and c

The more negative potential of grid, the more electrons will be:

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Attracted

Repelled

Attracted as well as repelled

Neither attracted nor repelled

Spherical mirrors are used in:

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Medical

Search light

Microscope

All of these

The data stored in C.D. is.

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680 MB

650 MB

700 MB

750 MB

How Galvanometer is connected in circuit to detect current?

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In Series

In Parallel

Fixed

Variable

Thye Water waves obey the laws of

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Reflection

Refraction

Diffraction

All of these

Formula for time period of spring mass system is represented by:

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T = 2π√m/k

T = 2π √k/m

T = 1/2π√k/m

T = 1/2π√m/k

1 bel=

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0.1 dB

10 dB

100 dB

0.01 dB

The direction of induced e.m.f. in a circuit is in accordance with conservation of.

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Mass

Charge

Momentum

Energy

If a neutral body is brought near to the electroscope its leaves:

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Diverge

Contract

Shut

Remain in normal position

A force applied on a body produces acceleration in

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Opposite direction

perpendicular direction

Its own direction

In any direction

The speed of sound in air would become double than ots speed at 10^oC at a temperature of.

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313 ^oC

586 ^oC

859^oC

899 ^oC

The trajectory of a projectile is.

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Circle

Parabola

Hyperbola

Straight line

S.I Unit of pressure of gas is.

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Nm

N.m

N2/m

N3m

More details of an object can be seen with a microscope by using

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Green light

Red light

Yellow light

Blue light

In Michelson's experiment the relation used to find the speed of light is

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16 fc

1/16 fd

16 fd

16/fd

Angular acceleration is produced by

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Power

Torque

Pressure

Force

For a gas obeying Boyle's Law, if the pressure is doubled, the volume becomes.

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Double

Three fold

One half

Remains the same

The phenomenon of polarization of light reveals that sun light is

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Longitudinal waves

Transverse wave

Electromagnetic waves

Monochromatic wave

Sound waves are

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Electromagnetic waves

Transverse waves

Compressional waves

Matter waves

the locus of all pint in the same wave of vibration is called.

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Wave front

Diffraction

Interference

Polarization

An electron miroscope emplys which to one of the following particles?

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Electron ahve a wave nature

Electrons can be focused by an electric field

Electrons can be focused by a magnetic field

All of the above

In RLC circuit the energy is dissipated in

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R only

R and L

R and C

L and C

In glass, molecules are irregularly arranged so it is known as.

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Solid

Liquid

Solid liquid

Gas

The SI unit of Stress is:

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Nm

Nm²

NM^-2

Nm³

Two oppositely charged balls A and B attract the third ball C, when placed near them turn by turn The third ball C must be.

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Positively charged

Negatively charged

Electrically neutral

Positively and negatively charged

A.C. Generator based upon the

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Lenz's law

Maxwell's relation

Faradays law of electromagnet induction

Mutual induction

Hydrogen atom spectrum does not lie in

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Ultraviolet region

Visible region

Infrared region

X ray region

Balmer series lies in

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Visible region

Invisible region

Ultraviolet region

Infrared region

The Lenz's law is also statement of:

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Law of conservation of mass

Law of conservation of charge

Law of conservation of energy

Law of conservation of momentum

Which one of the following resistance is used to convert a Galvanometer into an ammeter.

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High resistance

Low resistance in series with galvanometer

Shunt

High resistance in series with galvanometer

The unit of impedance is

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Farad

Henry

Tesla

Ohm