How would you demonstrate the presence of an induced current in the absence of a gal-vanometer ?

Consider Experiment 6.2. (a) What would you do to obtain a large deflection of the galvanometer? (b) How would you demonstrate the presence of an induced current in the absence of a galvanometer?

How do you infer the presence of CO_2 in respiration experiments ?

a) What is sublimation ? b) How do you demonstrate the sublimation of camphor?

What do you understand by 'resonance '? How would you use resonanceto determine the velocity of sound in air ?

We can use lime water to test the presence of CO_2 in respiration experiments. What change do you observe in lime water ?

When you step on a sharp object what would you do? You will take back your. feet. Is it not? Discuss with your friend how would we respond in the conditions given in table-2.

How would you account for the Cobalt (II) is stable in aqueous solution but in the presence of complexing reagents is easily oxidised.

(a) In a meter bridge the balance point is found to be at 39.5cm from the end A. when the resistor S is of 12.5Omega. Determine the resistance of R. Way are the connections between resistors in a Wheatstone or meter bridge made of thick copper strips ? (b) Determine the balance point of the bridge above if R and S are interchanged. (c ) What happens if the galvanometer and cell are interchanged at the balance point of the bridge ? Would the galvanometer show any current ?

Consider a one dimensional elastic collision between a given incoming body A and body B, initially at rest. How would you choose the mass of B in comparison to the mass of A in order that B should recoil with (a) greatest speed (b) greatest momentum?