Question # 1

Which law states that an induced current is always in such a direction as to oppose the motion or change causing it.

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Ampere's law

Gauss's law

Lenz's law

Kirchoff's law

The minimum velocity needed to put a satellite into the orbit

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Terminal velocity

Escape velocity

Critical velocity

Linear velocity

X-rays travel with

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The speed of light

The speed of sound

The speed of 3,000 m s-1

The speed of 3,500 m s-1

Which of the following has greatest binding energy per nucleon.

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Normal hydrogen

Deuterium

Tritium

Helium-4

The quality of sound

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Decreases with pitch

Varies directly as its pitch

Varies inversely as its pitch

Depends upon the overtones present there

The conductivity of a conductor is independent of the

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Electric charge

Electric potential

Electric field

Internal resistance

Electric Heater operates on the principle of.

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electromagnetism

Electromagnetic induction

Electrolysis

Momentum

The maximum number of rays required by a lens to form an image are

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2

3

4

Infinite

The temperature of a certain substance in Celsius scale of temperature is 800 ^oC in Kelvin scale it is.

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173 K

931 K

1073 K

1193 K

In a parallel resonant circuit, at resonance

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Current is maximum

Voltage is maximum

Impedance is minimum

Impedance is zero

A gallium atom is.

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Monvalent

Diavalent

Trivalent

Pentavalent

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

What would be the colour of sky through hour the day .If the earth has no atmosphere.

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Blue

Red

White

Black

What is a thermal properly of a material that determines the quantity of energy required to change the phase of a unit mass of that substance.

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Specific heat

Latent heat

Internal energy

Specific energy

The 1st condition of equilibriums satisfied if.

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Linear acceleration is zero

Angular acceleration is zero

The vector sum of all the forces is zero

The vector sum of all the torque is increase

The distance between the optical centre and principal focus is

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Focal plane

Focal length

Optical centre

Principal axis

The particles equal in mass or greater than protons are called.

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Mesons

Bosons

Baryons

Nucleons

Linear magnification is equal to the ratio of.

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Size of the object to the size of the image

Size of the image to the size of the object

size of the object focal length

Size of the image focal length

Prince Louis and vector de Brogtle got Nobel Prize for their work on.

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The dual nature of particles

The wave nature of particles

the corpuscular nature of particles

All of the above

In an A.C. circuit the current.

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Is in phase with voltage

Leads the voltage

Lags the voltage

Any of these depending upon the circumstances

Time period of a simple pendulum depends upon.

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Thickness of the thread

Mass of the pendulum

Length of the pendulum

Amplitude of vibration

Which both elements are good for nuclear fission.

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Thorium an uranium

Thorium and radium

Plutonium and uranium

Plutonium and throrium

To measure the accurate value of potential difference across two points, the voltmeter should have.

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Zero resistance

small resistance

Large resistance

Infinite resitance

Which of the following is the most massive particle.

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Deuteron

Alpha particle

Neutron

positron

A water wave is an example of.

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Transverse wave

Longitudinal wave

Hair wave

Shock wave

Which gas strictly obeys gas laws.

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Hydrogen gas

Inert gas

Ideal perfect gas

Helium gas

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

The first demonstration of wave nature of light was provided in 1801 by the experiment of

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HHuygen

Thomas young

Fresnel

Maxwell

When we pass a radiation from a radioactive material through an electric field.

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All three kinds of rays will be deflected

Only the Gama rays are deflected

The Alpha and Beta particles are deflected

Only the alpha particles are deflected

The average energy released per fission of U is about

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200 eV

2 keV

2 MeV

200 MeV

Which of the following is an example of continuous spectra.

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Black body radiation spectrum

Molecular spectra

Atomic spectra

grating spectrum

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