Physics (General Science) : All SSC Exams Previous Years Questions Papers Solved Part 2

Q.1:- Pure water is bad conductor of electricity because it is ?

1. Feebly Ionized
2. Not volatile
3. A very good solvent
4. A non-polar solvent

Q.2:- Lens is made up of ?

1. Pyrex glass
2. Flint glass
3. Ordinary glass
4. Cobalt glass

Q.3:- Electrostatic precipitator is used to control ?

1. Air Pollution
2. Water Pollution
3. Solid Waste
4. Noise Pollution

Q.4:- Among the following materials sound travels fastest in ?

1. Steel
2. Air
3. Vacuum
4. Water

Q.5:- The sound produced by a bat is ?

1. Audible
2. Subsonic
3. Infrasonic
4. Ultrasonic

Q.6:- The sounds having a frequency of 20 Hertz to 20,000 Hertz are known as ?

1. Audible Sounds
2. Ultrasonics
3. Infrasonics
4. Megasonics

Q.7:- Lambert’s law is related to ?

1. Reflection
2. Refraction
3. Interference
4. Illumination

Q.8:- Which type of reaction produces the most harmful radiation ?

1. Fusion reaction
2. Fission reaction
3. Chemical reaction
4. Photo-Chemical reaction

Q.9:- When hot water is sprinkled on a hotter glass tumbler, it breaks because ?

1. Glass suddenly expands
2. Glass suddenly contracts
3. Water evaporates
4. Glass reacts chemically with water

Q.10:- The velocity of sound in air ?

1. Decreases with increase of temperature
2. Increases with decrease of temperature
3. Does not depend on temperature
4. Decreases with decrease of temperature

Q.11:- A vacuum cleaner works on the principle of pressure difference. On the moon it will ?

1. Work as efficiently as on the Earth
2. Not work at all
3. Work with reduced efficiency
4. Work with increased efficiency

Q.12:- Should cars have bumpers that collapse under impact ?

1. Yes, since the offending car should get damaged and pay for the mistake
2. No, since it would be very expensive to get the car repaired
3. No, since the colliding car would then ram into the occupants and kill them
4. Yes, since they help to absorb the impact of a collision and keep the occupants safe

Q.13:- The radiant energy having lowest energy is ?

1. Gamma rays
2. UV rays
3. Visible light
4. Microwave radiation

Q.14:- The magnifying power of an astronomical telescope can be decreased by ?

1. Decreasing the focal length of the eyepiece
2. Increasing the focal length of the eyepiece
3. Increasing the focal length of the objective
4. None of these

Q.15:- The material used in the fabrication of a transistor is ?

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

Q.16:- A person wears spectates with concave lenses. It means that normally (when not using glasses), the image of distant objects is focussed in his eyes ?

1. Behind the retina
2. In front of the retina
3. On the retina
4. On the blind spot

Q.17:- An aircraft can perform aerobatic manoeuvres in a vertical loop because of ?

1. Gravity
2. Centripetal Force
3. Weight
4. Centrifugal Force

Q.18:- Damp clothes are dried in spin dryers by the action of ?

1. Centripetal forces
2. Centrifugal forces
3. Central forces
4. Non central forces

Q.19:- The surface tension of water on adding detergent to it ?

1. Increases
2. Decreases
3. No change
4. Becomes zero

Q.20:- In sunlight a rose appears red. In green light, the same rose appears ?

1. Red
2. Black
3. Green
4. Yellow

Q.21:- Woollen cloth protects the body from cold because ?

1. It is a good conductor of heat
2. It is a poor conductor of heat
3. External heat rays enter into the body through the woollen cloth
4. It reflects heat

Q.22:- Ocean currents are an example of ?

1. Convection
2. Conduction
3. Insulation
4. Radiation

Q.23:- Which colour of light shows maximum deviation when passed through a prism ?

1. Red
2. Green
3. Violet
4. Yellow

Q.24:- Waves that are required for long distance wireless communication are ?

1. Infrared rays
2. Ultraviolet rays
3. Radio waves
4. Microwaves

Q.25:- A rear-view mirror for driving is ?

1. Plain
2. Concave
3. Convex
4. Inverted