Question
Mark the correct statement
| (a) Nuclei of different elements can have the same number of neutrons |
| (b) Every element has only two stable isotopes |
| (c) Only one isotope of each element is stable |
| (d) All isotopes of every element are radioactive |
✓
Answer
(a) Nuclei of different elements can have the same number of neutrons
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
A parallel plate capacitor has capacitance C. If it is equally filled with parallel layers of materials of dielectric constants K1 and K2 its capacity becomes C1. The ratio of C1 to C is
|
(a) |
(b) |
(c) |
(d) |
If the series resistance decreases in an unloaded zener regulator, the zener current:
An electric dipole has the magnitude of its charge as q and its dipole moment is p. It is placed in a uniform electric field E. If its dipole moment is along the direction of the field, the force on it and its potential energy are respectively
|
(a) 2q.E and minimum |
(b) q.E and p.E |
(c) Zero and minimum |
(d) q.E and maximum |
If an ammeter is to be used in place of a voltmeter then we must connect with the ammeter a
|
(a) Low resistance in parallel |
(b) High resistance in parallel |
|
(c) High resistance in series |
(d) Low resistance in series |
A conductor carries a certain charge. When it is connected to another uncharged conductor of finite capacity, then the energy of the combined system is.
When an AC voltage of 220V is applied to the capacitor C:
In electromagnetic wave, according to Maxwell, changing electric field gives.
Figure shows a conducting loop being pulled out of a magnetic field with a speed u. Which of the four plots shown in figure may represent the power delivered by the pulling agent as a function of the speed u?
In an a.c. generator the speed at which the coil rotates is doubled. How would this affect the frequency of output voltage?
If an ammeter is connected in parallel to a circuit, it is likely to be damaged due to excess
|
(a) Current |
(b) Voltage |
(c) Resistance |
(d) All of these |