PHYSICS GRADE 8 FORMATIVE SEM-1 (2017-18)
Quiz by Amir Khan
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20 questions
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- Q15 joule= _________cal4.22.21.20.2445s
- Q2Which of the following energy transfers would be correct?Heat energy from a hot drink is transferred to cold hands.An ice cube loses heat energy to a hot cup of tea as it melts.Heat energy is transferred from stirrer to hot soupHeat energy from the refrigerator is transferred to a hot pie in the refrigerator.30s
- Q3Substance A has a higher specific heat than substance B. With all other factors equal, which requires the most energy to heat equal masses of A and B to the same temperature?Substance ASubstance B.Answer depends on the density of each substance.Both require the same amount of heat.30s
- Q4As water begins to boil in a kettle the hotter water at the bottom of the kettle closest to the stove begins to rise and the cooler water above sinks and warms. This is an example of:conductionAll the aboveconvectionradiation30s
- Q5Which is true regarding the solid ?They are compressibleThe particles move around freelyThere are strong forces of attraction between the particlesThere are great open spaces between the particles30s
- Q6The heat gained or lost by a body during a change of state is the product of its _______ and the specific latent heat.WeightVolumeChange in temperatureMass30s
- Q7Which among the following is INCORRECT about addition of detergent to water for washing cloth?It is added to decrease surface tensionIt is added to increase adhesive force between water and clothIt is added to decrease cohesive force between water moleculesIt is added to decrease adhesive force between water and cloth30s
- Q8The force of attraction between two similar types of molecule is called as______cohesive forceadhesive forceelectrostatic forcegravitational force30s
- Q9A ray of light obliquely travelling from water to air bends_____parallel to normalaway from the normaltowards the normaldoes not bend30s
- Q10When a glass prism causes dispersion of white light, the colour least deviated is ________violetGreenYellowRed30s
- Q11The band of seven colours obtained due to dispersion of white light is called as______dispersed bandSpectrumColour bandNewton's band30s
- Q12When ray of light obliquely travels from one transparent medium to another transparent with same refractive index. It will________bend away from the normalgoes along with the normalbend towards the normalpass undeviated30s
- Q13Rainbow is formed due to which of the following phenomenon of light?reflectionrefractiondispersionLateral inversion30s
- Q1430s
- Q1530s
