Question
Assertion :   The specific charge for positive rays is a characteristic constant.
Reason     : The specific charge depends on charge and mass of positive ions present in positive rays.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.
 
 
 
 

Answer

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

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

If an electron moves from rest from a point at which potential is $50$ volt to another point at which potential is $70$ volt, then its kinetic energy in the final state will be
A bulb has specification of one kilowatt and $250$ volts, the resistance of bulb is
The number of turns in the coil of an ac­ generator is $5000$ and the area of the coil is $0.25m^2.$ The coil is rotated at the rate of $100$ cycles/sec in a magnetic field of $0.2W/m^2.$ The peak value of the $emf$ generated is nearly
The valence of an impurity added to germanium crystal in order to convert it into a P-type semi conductor is(a) 6 (b) 5(c) 4  (d) 3
       
Light waves are:
An alternating voltage$\text{V}=200\sqrt{2}\sin100\text{t},$ Where V is in volt and t is in seconds, is connected to a series combination of $1\mu\text{F}$ capacitor and $10\text{k}\Omega$ resistor through an AC ammeter. The reading of the ammeter will be_____.
Two sources of monochromatic light in coherent, when their :
Let V and E represent the gravitational potential and field at a distance r from the centre of a uniform solid sphere. Consider the two statements:
  1. The plot of V against r is discontinuous.
  2. The plot of E against r is discontinuous.
  1. Both A and B are correct.
  2. A is correct but B is wrong.
  3. B is correct but A is wrong.
  4. Both A and B are wrong.
Two point charges 10C and -10C are placed at a certain distance. What is the electric potential of their midpoint?
An air capacitor of capacity C = 10μF is connected to a constant voltage battery of 12 V. Now the space between the plates is filled with a liquid of dielectric constant 5. The charge that flows now from battery to the capacitor is (a) 120 μC (b) 699 μC (c) 480 μC (d) 24 μC