Physics Past Questions and Answers

The velocity ratio of an inclined plane

A Increases with increase in the angle of inclination
B Increases with decrease in the angle of inclination
C Decreases with decrease in the angle of inclination
D Is independent of the angle of inclination

Question 1537:

Which of the following types of thermometer is used for the calibration of other thermometers?

A Liqud-in-glass thermometer
B Constant volume gas thermometer
C Optical pyrometer
D Thermocouple

Question 1538:

The magnitude of the expansion or contraction of a substance depends on the i. temperature change ii. nature of the substance iii. size of the substance. Which of the statements above are correct?

A I and ii only
B Ii and iii only
C I and iii only
D I, ii and iii

Question 1539:

Highly polished silvery surfaces are

A Poor absorbers and poor emitters of radiation
B Poor absorbers and good emitters of radiation
C Good absorbers and poor emitters of radiation
D Good absorbers and good emitters of radiation

Question 1540:

The volume of a given mass of gas at 27^oC and 800 mmHg is 76cm². Calculate its volume at s.t.p

A 100.0 cm³
B 72.8 cm³
C 60.0 cm³
D 36.4 cm³