Physics-
General
Easy
Question
Two conducting rods 
and 
of same length and cross-sectional area are connected (i) In series (ii) In parallel as shown. In both combination a temperature difference of 
is maintained. If thermal conductivity of is 
and that of is 
then the ratio of heat current flowing in parallel combination to that flowing in series combination is
The correct answer is:
Heat current 
In first case : 
In second case : 
Related Questions to study
chemistry-
When glycerol is treated with excess of 
it produces:
When glycerol is treated with excess of it produces:
chemistry-General
chemistry-
Ethyl ester 
The product will be
Ethyl ester The product will be
chemistry-General
physics-
Out of the following, in which vessel will the temperature of the solution be higher after the salt is completely dissolved
Out of the following, in which vessel will the temperature of the solution be higher after the salt is completely dissolved
physics-General
chemistry-
By which of the following procedures can ethyl 
-propyl ether be obtained?
By which of the following procedures can ethyl -propyl ether be obtained?
chemistry-General
Maths-
Line 
makes angle 
with 
If these lines and the line 
are concurrent, then
Line makes angle with If these lines and the line are concurrent, then
Maths-General
chemistry-
In the given transformation, which of the following is the most appropriate reagent?
In the given transformation, which of the following is the most appropriate reagent?
chemistry-General
physics-
Two identical square rods of metal are welded end to end as shown in figure (i), 20 calories of heat flows through it in 4 minutes. If the rods are welded as shown in figure (ii), the same amount of heat will flow through the rods in
Two identical square rods of metal are welded end to end as shown in figure (i), 20 calories of heat flows through it in 4 minutes. If the rods are welded as shown in figure (ii), the same amount of heat will flow through the rods in
physics-General
chemistry-
The decreasing order of boiling points of 1 , 2 , 3, alcohol is:
The decreasing order of boiling points of 1 , 2 , 3, alcohol is:
chemistry-General
maths-
In ΔABC, if 
then 
In ΔABC, if then
maths-General
chemistry-
Consider the following reaction, 
Consider the following reaction,
chemistry-General
physics-
A liquid cools down from 
to 
in 5 minutes. The time taken to cool it from to 
will be
A liquid cools down from to in 5 minutes. The time taken to cool it from to will be
physics-General
Maths-
If one of the lines in the pair of stright lines given by 
bisects the angle between the coordinate axes, then k
If one of the lines in the pair of stright lines given by bisects the angle between the coordinate axes, then k
Maths-General
chemistry-
Order of reactivity of halogen acids towards an alcohol is
Order of reactivity of halogen acids towards an alcohol is
chemistry-General
chemistry-
Which of the following is an example of elimination reaction?
Which of the following is an example of elimination reaction?
chemistry-General
physics-
A body cools in a surrounding which is at a constant temperature of 
. Assume that of obeys Newton’s law of cooling. Its temperature 
is plotted against time 
. Tangents are drawn to the curve at the points 
and 
. These tangents meet the time axis at angles of 
and 
, as shown
A body cools in a surrounding which is at a constant temperature of . Assume that of obeys Newton’s law of cooling. Its temperature is plotted against time . Tangents are drawn to the curve at the points and . These tangents meet the time axis at angles of and , as shown
physics-General
