Question # 1

The statemetn "If I do not study for this test, then I will not get good grade" is an example of.

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Prediction

Law

Theory

Observation

What is the ultimate truth of a scientific method.

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Hypothesis

Experientation

Law

Theroy

Which one is a better choice for a liquid in glass thermometer is that.

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Wets glass

Is colourless

Is a bad conductor

Expand linearly

Automobile technology is based on

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Thermodynamics

Acoustics

Electromagnetism

Optics

The instrument best measures the internal diameter of a pipe is.

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Screw gauge

Metre rule

Vernier caliper

Measuring tape

In which of the materials, particles have only vibrational motion.

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Liquids

Solid

Plasma

Gas

Least count of scew gauge is 0.01 mm. If main scale reading of screw guage is zero and third line of its circular scale conscides with datum line then the measurement on the screw guage is.

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0.03mm

3 mm

0.3mm

0.1 mm

A box is taken to the second floor at a building by doing some work.This work converts to.

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Kinetic energy

Heat enegy

Potential energy

Sound energy

Which of the following is not renewable eergy soruce.

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Fossil fuels

Hydroelectric energy

Wind energy

Solar energy

Which one is the quicket method to magnetize a material

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Strike with hammer

Putting inside a current carrying coil

Moving into magnetic field

Stroking the opposite pole

If a car doubles its speed, its kinetic energy will be

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Increased to four times

The same

Doubled

Increased to the three times

the resistance of an ammeter should be:

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high

very high

low

constant

The mirror whose inner surface is reflecting is called:

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Concave mirror

Convex mirror

Mirror

Lens

Electronics is a branch of:

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Mass

Applied Physics

Mechanics

Nuclear Physics

In the presence of a charged body, an insulated conductor develops positive charge at one end and negative charge at the other end, this i- called:

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Electrostatics

Electrostatic induction

Magnetism

Electromagnetic induction

The index of refraction depends on:

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The focal length

The speed of light

the image distance

The object distance

Radiations present in atmosphere due to the presence of different radioactive elements are:

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Cosmic radiations

Background radiations

secondary radiations

Electromagnetic radiations

A unit of electric charge, equal to the charge of 6.25x10¹⁸ electrons is:

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Electricity

Coulomb

Electric potential

Volt

A device which has two ways communication is:

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Television

Radio

Hard disk

Mobile phone

Release of energy by the sun is due to

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Nuclear fission

Nuclear fusion

Burning of gases

Chemical reaction

The instrument which is used to display the magnitude of changing electric current is called:

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Evacuated tube

Cathode rays oscilloscope

Television tube

Picture tube

Spherical mirrors are used in:

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Medical

Search light

Microscope

All of these

In stationary waves the points which always remain at rest are.

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Nodes

Antinodes

Crest

Trough

Viscosity is represented by Greek letter

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Which phenomenon of light proves that light waves are transverse in nature.

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Refraction

Reflection

Diffraction

Polarization

A spring has a spring constant k. If it is cut in two equal parts, the spring constant of each part will be

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K

2 K

K/2

4K

The Idea that light is electromagnetic waves was indroduced by

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Maxwell Planck

Newton

Fermi

Crooks

The equations of angular motion hold only in case when the axis of rotation is

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Moving

Fixed

Both a and b

None of these

Entropy remains constant.

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Isothermal process

Adiabatic process

Isochoric process

Isobaric process

The number of significant figures with the increases degree of approximation

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Decreases

Increases

Remains unchanged

None of these

The product of cross sectional area of a pipe and speed of fluid along the pipe is

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Zero

Maximum

Constant

Variable

The power needed to lift a mass of 5000 g to height of 1 m in 2 secnd is

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2.45 watt

24.5 watt

245 watt

2.45 watt

Light waves emitted from a source spread in

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Specific direction

All direction

Upward direction

None of these

Balmer series lies in

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Visible region

Invisible region

Ultraviolet region

Infrared region

Terminal potential difference is greater than emf of the cell when

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Circuit is open

Circuit is closed

small battery is charged by bigger battery

None of these

Which one is pentavalent impurity

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Boron

Gallium

Antimony

Indium

Production of x rays is reverse process of

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Photo electric effect

Compton effect

An nihilation

Pair production

the current which flows from a point at higher. potential to point at lower potential is called.

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Electric current

Conventional current

Either of these

None of above

The peak to peak value of alternating voltage is

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2V_o

V_o

None of these

When motor is just started, back emf is almost.

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Maximum

Zero

Minimum

Infinite

In Compton scatting, the value of shift is equal to Compton's wavelength, when X-rays is scattered at the angle of.

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90^oC

Zero

120^oC

45^oC

The energy of photon for photoelectric effect is less than

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1 MeV

2 MeV

5 MeV

8 MeV

The resonance frequency is given by:

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fr = 2π√LC

fr = 1/2πLC

fr = 1/ 2π√LC

f1 = 1/ 2πC√L

The radius of 10th orbit in hydrogen atom is.

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0.053 nm

0.53 nm

5.3 nm

53 nm