Question
In nuclear reaction 
A denotes
|
(a) Electron |
(b) Positron |
(c) Proton |
(d) Neutron |
✓
Answer
(d) Neutron
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The equivalent capacitance of three capacitors of capacitance 
and 
are connected in parallel is 12 units and product 
. When the capacitors 
and 
are connected in parallel, the equivalent capacitance is 6 units. Then the capacitance are
|
(a) 2, 3, 7 |
(b) 1.5, 2.5, 8 |
(c) 1, 5, 6 |
(d) 4, 2, 6 |
The color of the bright fringe near the central white bright fringe obtained in the interference pattern produced by white light will be :
Direction of magnetic field at any point due to a long current carrying conductor is:
When the current i is flowing through a conductor, the drift velocity is v. If 2i current is flowed through the same metal but having double the area of cross-section, then the drift velocity will be
|
(a) v/4 |
(b) v/2 |
(c) v |
(d) 4v |
A standing wave is produced on a string clamped at one end and free at the other. The length of the string.
→- Must be an integral multiple of $\frac{\lambda}{4}$
- Must be an integral multiple of $\frac{\lambda}{2}$
- Must be an integral multiple of $\lambda$
- May be an integral multiple of $\frac{\lambda}{2}.$
2μF capacitance has potential difference across its two terminals 200 volts. It is disconnected with battery and then another uncharged capacitance is connected in parallel to it, then P.D. becomes 20 volts. Then the capacity of another capacitance will be
|
(a) 2 μF |
(b) 4 μF |
(c) 18 μF |
(d) 10 μF |
The electric field intensity E, current density J and specific resistance k are related to each other through the relation:
+ 2C and +6C two charges are repelling each other with a force of 12N. If each charge is given -2C of charge, then the value of the force will be
|
(a) 4N (Attractive) |
(b) 4N (Repulsive) |
(c) 8N (Repulsive) |
(d) Zero |
The current sensitibility of a moving coil galanometer increases with decrease in:
The work function of three metals $A , B$ and C are $1.92 eV , 2 eV , 5 eV$ respectively. On the basis of Einstein equation, when radiation of wavelength 4100 Å is used, the emission of electrons will be :
→