Question # 1

The total number nucleons in a nucleus are called.

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Mass number

Atomic number

Neutron number

Isotopes

Which one of the following is not true.

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velocity can be negative

velocity is a vector

Speed is a sccalar

Speed can be negative

Which of the following propagates at the same speed as velocity of light.

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Heat waves

Sound waves

Shock waves

Beta particles

If a body a moving with constant acceleration the velocity time graph will be a

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zig zag

Straight line

Constant value

zero value

The combined resistance of two identical resistors, connected in series is 18 Mega Their combined resistance in a parallel arrangement will be.

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2 Mega

4 Mega

8 Mega

12 Mega

When a sound source moves towards a stationary observer there is.

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An apparent increase in wavelength

An apparent increase in frequency

an apparent decreases in frequency

A change in the velocity of the sound

A transistor can be used as

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Oscillator

Amplifier

Switch

Both a and c

Light product by a single Nicole is

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Unpolarized

Plane polarized

Circulatory polarized

Elliptically polarized

Which of the following measures how quickly the thermometer liquid mainly because it

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Is coloriess

Is a bad conductor of heat

Does not expand linearly

Has a low boiling point

The distribution of electrical charge i an object caused by teh influence of nearby charges is called.

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Electric potential

Electrostatic induction

Electric flux

Electric dipole moment

The polarization of an electromagnetic wave is determined by

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The magnetic field

The electric field

The electric and magnetic fields

The field direction of propagation of electromagnetic waves

The strength of the magnetic field around the current carrying conductor is

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Smaller near the conductor

Greater near the conductor

constant everywhere

Changing everwhere

Why a positively charged object is made neutral by someone touching it.

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Electrons flow from the object

Protons flow onto the object

Protons flow from the object

Protons flow onto the object

Two pure inductors each of self inductance L are connected in parallel The total inductance of the combination is.

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L

2L

L/2

L/4

What is a measure of the total energy of a thermodynamics system.

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Entropy

Enthalpy

Randomness

Chaos theory

In which form energy is stored in acondenser.

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Electric energy

Potential energy

Kinetic energy

Magnetic energy

X-rays used for

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Cutting boring and precision welding

Retina stitching in eye operations

Detecting heavy elements under the earth

Deflecting flaws in welding and casting

The process where by energy is dissipated from the oscillating system is called.

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Resonance

Damping

Forced oscillation

Free oscillation

Which of the following is most suitable for the core of the electromagnetism

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Air

Steel

Su Ni allow

Soft iron

In optics, which subfield studies the measurement of electromagnetic radiation including visible light.

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Radiometry

Photometry

Telemetry

Chronometry

Mean life of a radioactive sample is 100 s its half life will be

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0.693 s

1 s

6.93 s

69.3 s

The Step up transformer

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Increase the input current

Increases the input voltage

Has more turns in the primary coil

Has less time in the secondary coil

Light rays after passing through is convex lens.

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Bend away from principal axis

Bend towards participial axis

Remain unriveted

Travel parallel to the principal axis

The magnetic flux density at the centre of a long solenoid is dependent on.

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The number of turns per unit length of the silenced

The volume of the solenoid

The diameter of each turn of the solenoid

All of above

A radiation spectrum which is continuously distributed over a frequency region without being broken up into lines or bands is known as.

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Continuous spectrum

Band spectrum

discrete spectra

Absorption spectrum

A body of mass 8 kg moves along a circle of radius 4 m with constant speed of 88 m s-1 The centripetal force on the body is.

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10 N

128 N

48 N

148 N

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 volume of a goas at constant pressure is directly proportional to the temperature as measured on the.

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Celsius scale

Kelvin scale

Fahrenheit scale

Baume scale

In alternating current circuits the quantity which plays the same role as resistance in direct current circuits is called.

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Reactance

Admittance

Conductance

Impedance

High concentration of red blood cells increases the viscosity of blood from

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2 -3 time's that of water

3-4 times that of water

3 - 5 times that of water

4 -5 times that of water

The efficiency of a diesel engine is about

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15% to 35 5

355 to 40%

45% to 655

505 to 65 %

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