a. 16cm (ans: v=48cm,image real and magnified)
b. 8cm (ans: v= -24cm, image is virtual and upright)
Moraa orina answered the question on April 11, 2018 at 16:46
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A tin closed with an airtight lid contains air at a pressure of 1.0*2
5Pa at a temperature of 12^oC. If the
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Date posted: April 11, 2018. Answers (1)
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Date posted: April 11, 2018. Answers (1)
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Date posted: April 11, 2018. Answers (1)
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Date posted: April 11, 2018. Answers (1)
- The speed of light in medium 1 is 8.0*28m/s and in medium 2 is 1.5*28m/s. Calculate the refractive index of medium 2 with respect to...(Solved)
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Date posted: April 10, 2018. Answers (1)
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a) The refractive index of glass
b) The angle of refraction in glass for a ray of light...(Solved)
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ss
b) The angle of refraction in glass for a ray of light incident at the air-glass interface at an angle of incidence of
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Date posted: April 10, 2018. Answers (1)
- A ray of light from air passes successively through parallel layers of water, oil, glass and then into air again. If the refractive indices...(Solved)
A ray of light from air passes successively through parallel layers of water, oil, glass and then into air again. If the refractive indices of water, oil and glass are 4/3, 6/5 and 3/2 respectively and the angle of incidence in air is 600.
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Date posted: April 10, 2018. Answers (1)
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Date posted: April 10, 2018. Answers (1)
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Date posted: April 10, 2018. Answers (1)
- An aluminium tray of mass 400g containing 300g of water is placed in a refrigerator. After 80 minutes, the tray is removed and it is...(Solved)
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Date posted: April 10, 2018. Answers (1)
- 3g of dry ice was added to 20g of water at 26^oC in a beaker of negligible heat capacity. After the ice had all melted,...(Solved)
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Date posted: April 10, 2018. Answers (1)
- A block of ice of mass 40g at 0^oC is placed in a calorimeter containing 400g of water at 20^oC. Ignoring heat absorbed by the...(Solved)
A block of ice of mass 40g at 0^oC is placed in a calorimeter containing 400g of water at 20^oC. Ignoring heat
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Take s.h.c.of water= 4200JKg-1K-1 and the s.l.h. of fusion of ice= 340, 000JKg-1.
Date posted: April 10, 2018. Answers (1)
- 3kg of hot water was added to 9kg of cold water at 2^oC and the resulting temperature was 20^oC.ignoring heat loss by the container, determine...(Solved)
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Date posted: April 10, 2018. Answers (1)
- In an experiment to determine the specific heat capacity of a metal, a 20g of the metal was transferred from boiling water to a lagged...(Solved)
In an experiment to determine the specific heat capacity of a metal, a 20g of the metal was transferred
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final steady temperature was realized. The following data was recorded:
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-temperature of boiling water =99^oC
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mass of calorimeter =50g
Take s.h.c. of water=4200JKg-1K-1, s.h.c. of copper=400JKg-1K-1.
Use the data above to determine:
Date posted: April 10, 2018. Answers (1)
- A certain block is heated such that its temperature is raised from 15^oC to 45^oC. calculate the amount of heat absorbed by the metal if...(Solved)
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Date posted: April 10, 2018. Answers (1)
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A student heated 20Kg of water to a temperature of 80^oC. He then added x Kg of water at 15^oC and the
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Date posted: April 10, 2018. Answers (1)
- 70g of a solid initially at 250C was carefully dropped into water in a calorimeter at 600C. If the final constant temperature of the water...(Solved)
70g of a solid initially at 25^oC was carefully dropped into water in a calorimeter at 60^oC. If the final
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Date posted: April 10, 2018. Answers (1)
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Date posted: April 10, 2018. Answers (1)
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a) The current through the filament
b) The resistance of the filament used in the bulb.
Date posted: April 10, 2018. Answers (1)
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A 5.5 kW immersion heater is used to heat water. Calculate:
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Date posted: April 10, 2018. Answers (1)