Consider a thick glass tumbler and a thin glass tumbler which are made of the same kind of glass. Some hot liquid is poured into them. Which of the following statements is correct?
A.
the thick tumbler is less likely to crack because it is stronger
B.
the thick tumbler is less likely to crack because it insulates the heat beter, glass being a poor conductor of heat
C.
Both tumblers are equally likely to crack because they are made of the same kind of glass
D.
the thick tumbler is more likely to crack because uneven expansion persists for a longer time within the thicker glass
E.
the thick tumbler is more likely to crack because it is heavier
A capacitor and a resistor are connected in series with each other and in series with an accumulator of negligible internal resistance. The potential across the terminals of the capacitor is
A.
twice the e.m.f of the accumulator
B.
less than the e.m.f by the potential drop across the resistor
An air bubble rises from the bottom to the top of a water dam which is 40m deep. The volume of the bubble just below the surface is 2.5cm3. Find its volume at the bottom of the dam, if atmospheric pressure is equivalent to 10m water
