Question # 1

The S.I unit of power is :

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j/s2

J

W

J/M2

In SI system , unit of density is:

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kgm^-1

kgm^-3

kgm^-2

kgm

Perpendicular / Hypotenuse is called :

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Cos 𝜽

Sin 𝜽

Tan 𝜽

Tan^-1 𝜽

Which is unitless quantity:

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Mass

Force

Inertia

Momentum

Above of mass 50 kg is raised to a height of 3m. what is its P.E

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500 J

1000 J

1500 J

2000 J

Standards, of physical quantities were established in .

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1910

1020

1950

1960

In Which of the following state molecules do not leave their position?

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Solid

Liquid

Gas

Plasma

Gravitational force is a

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Contacted force

Non-contact force

Electrical force

Charging force

How much force is needed to body of mass 10 kg from falling:

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100 N

150 N

200 N

300 N

In velocity the body become double , then centripetal force will be:

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Half

Three times greater

Double

Four times greater

Earth revolves around the:

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Moon

Sun

Glaxy

None

One coulomb is equal to charge of electrons:

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6.25x10^-19

6.25x10¹⁹

6.25x10¹⁸

6.25x10^-18

isotopes are atom of same element with different.

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Atomic mass

Atomic number

Number of proton

Number of electron

Mathematical form of Ohm's law is:

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V = IR

V = I2R

V = Qt

V = IR2

If the current in a wire which is placed perpendicular to a magnetic field increases, the force on the wire.

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Increases

Decreases

Remains the same

Will be zero

AND operation is represented by:

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Dot (.)

Addition (+)

Division (÷)

Minus (-)

A positive electric charge:

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Attracts other positive charge

Repels other positive charge

Attracts a neutral charge

Repels a neutral chage

When a positive charge of 2 coulombs is placed at a point in an electric field, it experiences a force of 6N. The intensity of electric field at this point is:

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6 NC^-1

3 NC^-1

12 NC^-1

1.5 NC^-1

How many possible solutions are there for a prblem?

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One

Two

Three

Multiple

Electroscope is used for detecting:

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Current

Charge

Voltage

Resistance

In A.C. generator flux will be zero if coil is to the field.

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90^o

45^o

Parallel

Inclined

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

The potential difference across depletion region in case of Si is

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0.6 volt

0.9 volt

0.7 volt

0.2 volt

If the resistance of 500 Ohm have fourth band of silver colour then its upper maximum resistance will be.

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600 Ohm

550 Ohm

450 Ohm

400 Ohm

The circuit of full wave rectification consist of

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Three diodes

Four diodes

Two diodes

One diode

X₁is low for low frequency Fy but Xc is.

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Zero

Low

High

Same is H

The relative permitivity of air is

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79.5

1.006

1.06

1.0006

Binding energy per nucleon is maximum for

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Platinum

Iron

Uranium

Lead

Charge on an electron was determined by

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Ampere

Millikan

Maxwell

Bohr

If a low resistance is connected parallel to a galvanometer then galvanometer is converted.

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Ammeter

Voltammeter

Ohmmeter

Multimeter

Wave nature of light appears in

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Pair production

Compton effect

Photo electric

Interference

The line radiations emitted from by hydrogen filled discharge tube can be analyzed into.

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Band spectrum

Line spectrum

Continuous spectrum

Absorption spectrum

Gauss's law can only be applied to.

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A curved surface

A flat surface

A closed surface

A surface of any shape

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