physics

Which of the following has no effect on radiation?

A. nature of surface B. density C. surface area D. temperature Correct Answer: Option B - density Explanation Radiation depends…

5 years ago

The pressure of one mole of an ideal gas of volume10‾²m³  at a temperature of 27°C is [molar gas constant = 8.3 J mol‾¹k‾¹]

A. 2.49 x 104 Nm-2 B. 2.24 x 104 Nm-2 C. 2.49 x 105 Nm-1 D. 2.24 x 105 Nm-1 Correct Answer: Option C…

5 years ago

A vapour is said to be saturated when?

A. a dynamic equilibrium exists between liquid molecules and the vapour molecules B. a dynamic equilibrium exists such that more…

5 years ago

The small droplet of water that forms on the grass in the early hours of the morning is?

A. hail B. dew C. fog D. mist Correct Answer: Option B - dew Explanation Dew point is the temperature…

5 years ago

If a container is filled with ice to the brim; what happens to the level of water when the ice completely melts?

A. the level of water goes up B. the water in the glass outflows C. the level of water remains…

5 years ago

Heat is radiated by hot objects in the form?

A. x-rays B. light energy C. infrared rays D. solar energy Correct Answer: Option C - infrared rays Explanation Inform…

5 years ago

One special advantage of alcohol over mercury as a thermometric liquid is its?

A. low density B. low freezing point C. high specific D. low boiling point Correct Answer: Option B - low…

5 years ago

A hydrometer is an instrument used in measuring?

A. vapour pressure of a fluid B. density of liquid C. relative humidity of a liquid D. relative density of…

5 years ago

The accurate measurement of the relative density of a substance in its powdered form is done with a beam balance and?

A. a density bottle B. an eureka can C. a pipette D. a burette Correct Answer: Option A - a…

5 years ago