Question # 1

Two waves of the same frequency and amplitude travelling in opposites directions along the same path in the same medium produce.

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Stationary waves

Transverse wave

Longitudinal waves

Compressional waves

The specific heat capacity of the body depends upon.

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the heat given to it

Mass of the body

Temperature raised

Material of the body

Which physical properties is most responsible for resonance.

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Frequency

Intensity

Pitch

Loundness

Lenz's presented his law is

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1826

1829

1834

1839

Such an inductor coil which does not consume energy and is often employed for controlling A.C. without consumption of energy is called.

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Reactance

Choke

Impendence

Diode

A pure choke consumes

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No power

Maximum power

Minimum power

Average power

Which of the following can be used to calculate electrical power.

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Current x resistance

Potential difference x current

Potential difference / current

Potential difference /resistance

An example of forced oscillation is

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the pendulum of a clock

The wind screen wiper

A plucked sonometer wire

A sonometer wire excited by a tuning fork

The product of mass and specific heat of a substance is called.

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Latent heat

Water equivalent

Atomic heat

Heat capacity

Rate of flow of a liquid is expressed in

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Litre m-3

Litre s-1

Litre m-1

Litre s

A logic circuit with one input and one output that inverts the input signal at the output is.

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AND gate

NOT gate

OR gate

NOR gate

A simple pendulum suspended from the celling of a lift has a time period T when the lift falls freely the time period of the pendulum will become

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Zero

T/9.8

9.8 T

Infinity

Refractive index of a medium is define das.

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speed of light in vaccum/speed of light in medium

Speed of light in medium/Speed of light in vacuum

Speed o flight in air/speed of light in medium

Speed of light in medium/Speed of light in air

The source of geothermal energy is

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The fusion in the sun

the radioactive decay in the earths interior

the rotation of earth around the sun

The rotation of earth around its own axis

When a wire moves perpendicularly to a magnetic field, the induced emf does ot depends upon

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The velocity of the wire

The resistance of the wire

The flux density of the magnetic

The orientation of the wire field

There are how many types of forces or interactions.

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Two

Three

Four

Five

If there are no frictional effects, the mechanical energy of a system executing simple harmonic motion.

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Changes with time

Is variable

Is constant

Is not conserved

Any substance that can flow is a

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Solid

Gas only

liquid only

Fluid

When the frequency of A.C in L - C- R circuit is incrased the impedance of L-C-R circuit.

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Increase

Decrease

Remain unchanged

First decrease and then increases

Which of the following is standard scale of temperature

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Mercury scale

Platinum resistance scale

Gas scale

Alcohol scale

Which quantity has dimensions different from the others.

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Energy per unit volume

Force per unit area

Angular momentum per unit mass

Pressure

Which was the transparent front part of the eye that covers the pupil, iris and interior chamber.

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Cornea

Fovea

Sclera

Choroid

The gravitational force between two bodies does not depends upon.

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The product of their masses

Their separation

The sum of their masses

The constant of gravitation

X-rays are also used for

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Ultrasound imaging

endoscopy

Computerized tomography scanning

Magnetic resonance imaging scanning

Which gas strictly obeys gas laws.

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Hydrogen gas

Inert gas

Ideal perfect gas

Helium gas

In an induction coil, the secondary emf is.

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Zero at the break of the circuit

Zero during make of the circuit

Very high during make of the circuit.

Very high during break of the circuit

Which temperature is required for the fusion of two nuclides.

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10⁶ K

10⁷K

10⁸K

10 ⁹ K

In comparison with the electrostatic force between two electrons the electrostatic force between two protons is.

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Zero

Smaller

Greater

Same

Inserting a di electric between the plates of a charged parallel plate capacitor.

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Decrease the capacitance

Leaves teh capacitance the same

Encourages breakdown between the plates

Reduces the electric intensity between the plates

Which type of radiation would be stopped completely by a thin piece of cardboard.

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Alpha particles

Beta particles

Gama rays

X -rays

What is used in an electric circuit to allow current in one direction only.

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A fuse

An ammeter

A diode

A relay

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