Question # 1

The decimal equivalent of 1111 is

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5

10

15

120

What is the total entropy change during an reversible cycle.

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Unity

Infinite

Zero

Cannot be detected

In electric magnetism , the additional fundamental quantity that is chosen as a basic unit is called.

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Electric potential

Electric fierce

Electric charge

Magnetic force

Which law states that two given samples of an ideal gas at the same temperature pressure and volume contain the same number of molecules.

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Charles law

Avogadro's

Boyles law

Boizmann law

The neutral atoms of all isotopes of the same element contain the same numbers of.

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Electrons and protons

Electrons and neutrons

Neutrons

Neutrons and protons

A Carnot engine can be 100% efficient of the sink is at.

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0 k

0 oF

0 oC

273 K

Which circuit elements has two stable states and can be used to store information.

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Flip flop or latch

Logic gate

Oscillator

Amplifier

The fact that the edge of a shadow formed by a point source of light shining on an object is not sharp is an example of.

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Refraction

Diffraction

Polarization

Dispersion

Angular momentum of a body under a central force is

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Zero

Maximum

Minimum

Constant

A darling ion amplifier is characterized by

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High voltage and current gain

High input resistance and current gain

High output resistant and current gain

Low input resistance and current gain

The ablate of rays of different colours to converge a single point sifter refraction though a convex lens is called.

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Come

Distortion

Spherical aberration

Chromatic aberration

The electric supply line in houses works at 220 V what will be the amplitude of emf.

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120 V

331 V

220 V

440 V

Which one of the following has the largest wavelength.

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x rays

Infrared rays

Visible light

Radio waves

The shape of wave front depends on

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Density of medium

Shape of medium

Viscosity of medium

Length of medium

The relation between horse power and watt is.

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1 hp = 546 watts

1 hp = 746 watts

1 hp = 946 watts

1 hp = 1000 watts

Density of blood a

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Equal to water

Greater than water

Less than water

zero

The velocity of the wave could be increased by

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Reducing the amplitude

Decreasing the frequency

Increasing the period

Stretching the spring more

Which mirror be used for obtaining a parallel beam of light from a small lamp.

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Plane mirror

Convex mirror

Concave mirror

All of these

The unit of time constant RC is.

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Second

second-1

Second -2

Second 2

Solar cells are thin wafers made from

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Uranium

Nickel

Silicon

Cadmium

When the lift is moving upward with an acceleration then weight of the object will be.

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w = ma

w - ma

w

2 w

When the deforming force applied on a body produces change in volume then it is said to be

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Tensile stress

Compression stress

Shear stress

Shear modulus

The magnus effect is equivalent to

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Bernouli's theorem

Archimedes principle

Pascal's law

Blood pressure

An electrical device is rated at 12 W , 2 A How many 1.5 V batteries are needed in the device.

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2

4

6

8

A girl standing 150 m in front of tall building fires a pistol A boy standing 350 m behind her hears two bangs 1 s apart from this information what is the speed of sound in air.

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150 m s-1

300 m s-1

280 m s-1

330 m s-1

A ball is thrown straight up when the ball reaches the highest point.

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Both is velocity and acceleration are zero

In velocity os zero but acceleration is not zero.

It acceleration is zero but velocity is not zero.

Neither velocity nor acceleration is zero.

The SI unit of absorbed dose in.

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Bel

Weber

Rem

Grey

The magnetic field inside a solenoid is

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Zero

Infinite

Uniform

Non uniform

Entropy of universe is increasing day by da due to.

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Power generating processes

Energy used into work

Depletion of ozone

All of the above

Vectors are ofhen spilt into two or more orthogonal components what is true of these components.

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they are perpendicular

They are parallel

They are antiparallel

They have same magnitude

Base current of a transistor is 1 mA and collector current is 99 mA What is emitter current.

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1 mA

100 mA

98 mA

110 mA

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