Physics Past Questions and Answers

If a tube of small radius opened at both ends is placed in a liquid, the liquid will

A Remain at the same level irrespective of whether the liquid wet the glass or not
B Fall below the liquid level if the liquid wets the glass
C Falls below the liquid level if the liquid does not wet the glass
D Rise above the liquid level if the liquid does not wet the glass

Question 1522:

An object weighs 22 kg in water and 30kg in air. what is the upthrust exerted by the liquid on the object. [g = 10 ms2]

A 50 N
B 520 N
C 220 N
D 80 N

Question 1523:

A metal of volume 40 cm3 is heated from 30 °c to 90 °c, the increase in volume is

A 0.12 cm3
B 4.00 cm3
C 1.20 cm3
D 0.40 cm3
E No correct option

Question 1524:

A copper wire was subjected to a tensile stress of 7.7 x 107 x 10 Nm-2. calculate strain of the wire. [young modules = 1.1 x 1011 Nm-2]

A 2. 0 x 10-5
B 7.0 x 10-3
C 7.0 x 10-4
D 2.2 x 10-4

Question 1525:

I. High thermal capacity. II. High sensitivity. III.Easy readability. IV. Accuracy over a wide range of temperature From the statement above, the qualities of a good thermometer are

A I and II
B I, II,III and IV
C I, III and IV
D II, III and IV