Physics Past Questions and Answers

The instrument used in the measurement of atmospheric pressure is?

A Hydrometer
B Ratemeter
C Barometer
D Photometer
E Manometer

Question 372:

A tap supplies water at 30°C while another supplies at 86°C. If a man wishes to bath with water at 44°C, calculate the ratio of mass of hot water to that of cold water required

A 1:3
B 3:1
C 3:7
D 7:3
E 15:8

Question 373:

A steam trap is a component of apparatus used in determining the specific latent heat of vaporization of steam. In the steady state, the steam trap

A Stores the steam for future use
B Prevents the steam from escaping
C Ensures that only dry steam gets into the calorimeter
D Allows condensed steam to go into the calorimeter
E Determines the quantity of steam used

Question 374:

A hygrometer is an instrument used to measure

A Dew point
B Temperature
C Relative density
D Relative humidity
E Vapour pressure

Question 375:

The image of an object placed at the center of the curvature of a concave mirror is

A Inverted and magnified
B At the principal focus
C Real and diminshed
D Erect and virtual
E At the center of the curvature