Question
Assertion :   Reduction factor (K) of a tangent galvanometer helps in reducing deflection to current.
Reason     : Reduction factor increases with increase of current.(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

(c) If assertion is true but reason is false.

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 a copper rod carries a direct current, the magnetic field associated with the current will be:
The current through choke coil increases form zero to 6A in 0.3 seconds and an induced e.m.f. of 30 V is produced. The inductance of the coil of choke is(a) 5 H     (b) 2.5 H(c) 1.5 H  (d) 2 H
       
Through two parallel wires $A$ and $B, 10$ and $2$ ampere of currents are passed respectively in opposite direction. If the wire $A$ is infinitely long and the length of the wire $B$ is $2\ m,$ the force on the conductor $B,$ which is situated at $10 \ cm$ distance from $A$ will be
Two ideal slits $S_1$ and $S_2$ are at a distance $d$ apart, and illuminated by light of wavelength $\lambda$ passing through an ideal source slit $S$ placed on the line through $S_2$ as shown. The distance between the planes of slits and the source slit is $D$. A screen is held at a distance $D$ from the plane of the slits. The minimum value of $d$ for which there is darkness at $O$ is
If luminous efficiency of a lamp is 2 lumen/watt and its luminous intensity is 42 candela, then power of the lamp is(a) 62 W (b) 76 W(c) 138 W(d) 264 W
       
Frequency of a wave is $6 \times 10^{15} Hz$ .  The wave is
A metallic solid sphere is placed in a uniform electric field. The electric field lines follow the path(s) shown in figure as
Image
Consider the situation shown in figure. The wire AB is slid on the fixed rails with a constant velocity. If the wire AB is replaced by a semicircular wire, the magnitude of the induced current will: 
The distance between an object and the screen is 100 cm. A lens produces an image on the screen when placed at either of the positions 40 cm apart. The power of the lens is(a) ≈ 3 dioptres(b) ≈ 5 dioptres(c) ≈ 7 diopters(d) ≈ 9 diopters
       
Carbon has __________ isotopes.