MCQ
Which reaction is not part of proton-proton cycle
- A$_1H^1 + \,_1H^1 \to \, _1H^2 + \beta ^+ + v + Q$
- ✓$_1H^2 + \,_1H^2 \to \, _2He^3 + \,_0n^1 + Q$
- C$_1H^2 +\, _1H^1 \to \, _2He^3 + Q$
- D$_2He^3 + \,_2He^3 \to \, _2He^4 + 2(_1H^1) + Q$
✓
Answer
Correct option: B.
$_1H^2 + \,_1H^2 \to \, _2He^3 + \,_0n^1 + Q$
b
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
Light enters an isosceles right triangular prism at normal incidence through face $A B$ and undergoes total internal reflection at face $B C$ as shown below.The minimum value of the refractive index of the prism is close to
→Atomic mass number of an element thorium is $232$ and its atomic number is $90$. The end product of this radioactive element is an isotope of lead (atomic mass $208$ and atomic number $82$). The number of alpha and beta particles emitted is
→Statement $-1$ : Path of the charge particle may be straight line in uniform magnetic field.
Statement $-2$ : Path of the charge particle is decided by the angle between its velocity and the magnetic force working on it
→Statement $-2$ : Path of the charge particle is decided by the angle between its velocity and the magnetic force working on it
A rod of length $10\,\, cm$ lies along the principal axis of a concave mirror of focal length $10\,\, cm$ in such a way that its end closer to the pole is $20\,\, cm$ away from the mirror. The length of the image is ......$cm$
→In displacement method, there are two position of a lens for which we get clear image. First position of the lens is at $40 \,cm$ from object and second is at $80 \,cm$, the focal length of lens is ......... $cm$
→Two bodies, a ring and a solid cylinder of same material are rolling down without slipping an inclined plane. The radii of the bodies are same. The ratio of velocity of the centre of mass at the bottom of the inclined plane of the ring to that of the cylinder is $\frac{\sqrt{x}}{2}$. Then, the value of $x$ is .... .
→The potential energy of a long spring when stretched by $2\,cm$ is $U$. If the spring is stretched by $8\,cm$, potential energy stored in it will be $.......\,U$
→Which of the following statements is correct in respect of a geostationary satellite
The acceleration due to gravity at pole and equator can be related as
Two parallel wires in the plane of the paper are distance $X _0$ apart. A point charge is moving with speed $u$ between the wires in the same plane at a distance $X_1$ from one of the wires. When the wires carry current of magnitude $I$ in the same direction, the radius of curvature of the path of the point charge is $R_1$. In contrast, if the currents $I$ in the two wires have direction opposite to each other, the radius of curvature of the path is $R_2$.
→If $\frac{x_0}{x_1}=3$, the value of $\frac{R_1}{R_2}$ is.