Question

The V-i graphs A and B drawn for two voltameters. Identify each graph

(a) A for water voltameter and B for Cu  voltameter

(b) A for Cu  voltameter and B for water voltameter

(c) Both A and B represents Cu  voltameter

(d) None of these

Answer

(a) A for water voltameter and B for Cu  voltameter

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Two particles X and Y having equal charge, after being accelerated through the same potential difference enter a region of uniform magnetic field and describe circular paths of radii R1 and R2 respectively. The ratio of the mass of X to that of Y is:
  1. $\Big(\frac{\text{R}_1}{\text{R}_2}\Big)^{\frac{1}{2}}$
  2. $\frac{\text{R}_1}{\text{R}_2}$
  3. $\Big(\frac{\text{R}_1}{\text{R}_2}\Big)^2$
  4. $\text{R}_1\text{R}_2.$
The solar spectrums is :

For a triode m = 64 and gm =1600 m mho. It is used as an amplifier and an input signal of 1V (rms) is applied. The signal power in the load of 40 kW will be

(a) 23.5 mW

(b) 48.7 mW

(c) 25.6 mW

(d) None of these

The force between point charges kept in vacuum is 18 Newton. If a glass plate of dielectric constant 6 is placed between these charges, then the value of force will be:

In a fission reaction , the binding energy per nucleon of X and Y is 8.5 MeV whereas of  is 7.6 MeV. The total energy liberated will be about

(a) 200 KeV

(b) 2 MeV

(c) 200 MeV

(d) 2000 MeV

The resistance of a discharge tube is

(a) Ohmic

(b) Non-ohmic

(c) Both (a) and (b)

(d) Zero

In the circuit shown in figure, the current drawn from the battery is 4A.  If 10 W resistor is replaced by 20 W resistor, then current drawn from the circuit will be

(a) 1 A

(b) 2 A

(c) 3 A

(d) 0 A

A conducting wire is moving towards right in a magnetic field B. The direction of induced current in the wire is shown in the figure. The direction of magnetic field will be

(a) In the plane of paper pointing towards right

(b) In the plane of paper pointing towards left

(c) Perpendicular to the plane of paper and down‑wards

(d) Perpendicular to the plane of paper and upwards

A hollow double concave lens is made of very thin transparent material.  It can be filled with air or either of two liquids L1 and L2 having refractive indices n1 and n2 respectively (n2 > n1 > 1).  The lens will diverge a parallel beam of light if it is filled with

(a) Air and placed in air

(b) Air and immersed in L1

(c) L1 and immersed in L2

(d) L2 and immersed in L1

If the amplitude ratio of two sources producing interference is 3 : 5, the ratio of intensities at maxima and minima is

(a) 25 : 16

(b) 5 : 3

(c) 16 : 1 

(d) 25 : 9