Physics (General Science) : All SSC Exams Previous Years Questions Papers Solved Part 7

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Q.1:- Quality of a musical note depends on ?

  1. Fundamental frequency
  2. Amplitude of the wave
  3. Harmonics present
  4. Velocity of sound in the medium

Q.2:- A particle is thrown vertically upward. When it reaches the highest point, it has ?

  1. A downward acceleration
  2. An upward acceleration
  3. A downward velocity
  4. A horizontal velocity

Q.3:- Which one of the following is an Ohmic conductor ?

  1. Germanium
  2. Silicon
  3. Carbon
  4. Silver

Q.4:- Parabolic mirrors are used in ?

  1. Car headlights
  2. Driving mirrors
  3. Dentists mirrors
  4. Shaving mirrors

Q.5:- Rise of oil a wick is due to ?

  1. Density of the oil
  2. Viscosity of the oil
  3. Surface tension of the oil
  4. Pressure of the oil

Q.6:- Bats can sense obstacles because they produce ?

  1. Supersonic sound waves
  2. Ultrasonic sound waves
  3. Infrasonic sound waves
  4. Micro Sound Waves

Q.7:- A bomb at rest explodes into a large number of tiny fragments. The total momentum of all the fragments ?

  1. Is zero
  2. Depends on the total mass of all the fragments
  3. Depends on the speeds of various fragments
  4. Is infinity

Q.8:- ‘Hydraulic Brakes’ work on the principle of ?

  1. Pascal’s law
  2. Thomson’s law
  3. Newton’s law
  4. Bernoulli’s theorem

Q.9:- Red is used as an emergency or danger signal as ?

  1. It is a striking colour
  2. Its wavelength is the longest
  3. It is scattered
  4. It has very high energy

Q.10:- A device used for converting A.C. into D.C. is called ?

  1. Transformer
  2. Rectifier
  3. Induction coil
  4. Dynamo

Q.11:- The metal used to make lightning conductors is ?

  1. Iron
  2. Aluminium
  3. Copper
  4. Zinc

Q.12:- The type of mirrors used in the headlamps of cars is ?

  1. Parabolic Concave
  2. Plane
  3. Spherical Convex
  4. Cylindrical Concave

Q.13:- Which one of the following lenses should be used to correct the defect of astigmatism ?

  1. Cylindrical lens
  2. Concave lens
  3. Convex lens
  4. Bifocal lens

Q.14:- Fibre optics work on the principle of ?

  1. Scattering of light
  2. Total internal absorption
  3. Total internal reflection
  4. Optical rotation
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Q.15:- Superconductors are those elements ?

  1. Whose conductivity is intermediate between metals and insulators
  2. Whose resistance falls almost to zero at very low temperatures
  3. Which turn into insulators at very low temperatures
  4. Which conduct electricity only at super-high temperatures

Q.16:- The swing of a spinning cricket ball in air can be explained on the basis of ?

  1. Sudden change in wind direction
  2. Buoyancy of air
  3. Turbulence caused by wind
  4. Bernoulli’s Theorem

Q.17:- The energy stored in a watch spring is ?

  1. Kinetic Energy
  2. Potential Energy
  3. Heat Energy
  4. Chemical Energy

Q.18:- A pond of water appears less deep due to ?

  1. Reflection
  2. Diffraction
  3. Refraction
  4. Polarisation

Q.19:- Clear nights are colder than cloudy nights because of ?

  1. Conduction
  2. Condensation
  3. Radiation
  4. Insolation

Q.20:- Clothes keep us warm in winter because they ?

  1. Supply heat
  2. Do not radiate heat
  3. Prevent air from contacting the body
  4. Prevent the heat of the body from escaping

Q.21:- At boiling point of liquids, its ?

  1. Temperature increases
  2. Atmospheric pressure increases
  3. Temperature remains constant
  4. Vapour pressure decreases

Q.22:- When temperatures difference between liquid and its surroundings is doubled. The rate of loss of heat will ?

  1. Remain same
  2. Double
  3. Three times
  4. Four times

Q.23:- Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in ?

  1. Conduction
  2. Convection
  3. Radiation
  4. Both Conduction and Convection

Q.24:- Name of the process by which bubbles from liquid are formed ?

  1. Effervescence
  2. Surface Tension
  3. Surface Energy
  4. Degasification

Q.25:- Which of the metals has the maximum thermal conductivity ?

  1. Iron
  2. Aluminium
  3. Silver
  4. Copper


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