Physics Test 27
Total Questions: 25
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A ) Reflection of light
B ) Diffraction of light
C ) Refraction of light ✅
D ) Absorption of light
A ) Speed of light ✅
B ) Speed of sound
C ) Speed of earth rotation
D ) Speed of sun rotation
A ) Dry air than in water
B ) Wood than in iron
C ) Iron than in air ✅
D ) Hydrogen than in water
A ) Refraction of sound
B ) Reverberation of sound
C ) Resonance of sound ✅
D ) Echolocation of sound
A ) Fungus
B ) Virus
C ) Bacterials ✅
D ) Insects
A ) Rubber,silver,glass
B ) Silver,rubber,steel
C ) Steel,silver, rubber ✅
D ) All have equal elastically
A ) Red
B ) Violet ✅
C ) Green
D ) Yellow
A ) A red light filter
B ) A device used for analysing polarized light ✅
C ) A device used in polarimeter
D ) An adjustable shutter
A ) Rayleigh scattering ✅
B ) Dispersion
C ) Raman effect
D ) None of these
A ) Conduction
B ) Convection ✅
C ) Radiation
D ) None of these
A ) At the bottom of a 500 ft. deep mine
B ) At the top of a mountain 5,000 ft high
C ) At a distance of 100 km above the earth's surface
D ) At the surface of the earth ✅
A ) Adiabatic process
B ) Irreversible process
C ) Reversible process
D ) Isothermal process ✅
A ) Adiabatic expansion ✅
B ) Flow at high speed
C ) Isothermal expansion
D ) None of these
A ) Atmospheric pressure is high in the hills and water boils at a higher temperature
B ) Atmospheric pressure is lower and water boils at a lower temperature ✅
C ) Due to low atmospheric pressure in the hills the boiling point of water is raised and therefore water takes longer to boil
D ) The humid atmosphere in the hills absorbs a lot of heat, leaving very little for the cooking
A ) Refraction
B ) Reflection
C ) Total internal reflection ✅
D ) Polarization
A ) Is affected only by permanent magnetics
B ) Rotates in the magnetic field of an electric current
C ) Aligns itself parallel to a magnetic field ✅
D ) Aligns itself perpendicular to a magnetic field
A ) The total capacitance is the sum of the individual capacitance
B ) The total charge is the sum of the charges on each capacitor
C ) The total voltage is the sum of the voltage across each capacitor ✅
D ) The available charge is shared between two or more capacitors
A ) To produce charge
B ) To change the direction of current
C ) To collect the charge ✅
D ) As a good conductor of electricity
A ) The presence of moisture in the air reduces the conductivity of charge ✅
B ) When a body is charged positively,some electrons escape from it
C ) A body is said to be negatively charged when it has got some electrons
D ) None of the above statements is correct
A ) Attract each other ✅
B ) Repel each other
C ) Do not exert any force on each other
D ) None of these
A ) Driving force in the direction of car's motion
B ) Resistance force opposite to the direction of car's motion
C ) An inclined force
D ) Equal to zero ✅
A ) The AC does skin effect ✅
B ) In AC a wid range of voltages is possible
C ) Lines loss in AC transmission lines are negligible
D ) In AC the magnitude of current can be reduced by a choke?
A ) Galvanometer
B ) Hot-wire ammeter ✅
C ) Moving coil galvanometer
D ) None of these
A ) Copper is a better conductor than iron ✅
B ) Copper is cheaper than iron
C ) Copper can take higher power than iron
D ) Copper is lighter than iron
A ) Diamagnetic substances
B ) Ferromagnetic substances ✅
C ) Paramagnetic substances
D ) Dielectric substances