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A proton carrying 1 MeV kinetic energy is moving in a circular path of radius R in a uniform magnetic field. What should be the energy of an $lpha$-particle to describe a circle of the same radius in the same field?
In the following figure, the diodes which are forward biased, are (I) (II) (III) (IV). Choose the correct option from the given ones:
No new follicles develop in the luteal phase of the menstrual cycle because :
The figure given below depicts a diagrammatic sectional view of the female reproductive system of humans. Which one set of three parts out of A-F have been correctly identified?
The main function of mammalian corpus luteum is to produce:
From Ampere's circuital law, for a long straight wire of circular cross-section carrying a steady current, the variation of the magnetic field inside and outside the region of the wire is:
If a small amount of antimony is added to germanium crystal:
How many Y-chromosomes are present in the 2nd polar body in human beings?
The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is:
At which state of life the oogenesis process is initiated?
Which part of the ovary in mammals acts as an endocrine gland after ovulation?
A wire carrying a current $I$ along the positive $x$-axis has length $L$. It is kept in a magnetic field $\vec{B} = (2\hat{i} + 3\hat{j} - 4\hat{k})$ T. The magnitude of the magnetic force acting on the wire is:
When two deuterium nuclei fuse together to form a tritium nucleus, we get a:
Receptors for sperm binding in mammals are present on:
Which of the following induces the development of the corpus luteum?
In humans, at the end of the first meiotic division, the male germ cells differentiate into the:
The second maturation division of the mammalian ovum occurs:
A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected in the region such that its velocity is pointed along the direction of fields, then the electron:
When $X \rightarrow ^{14}_{7}\text{N} + 2\beta^-$, then the number of neutrons in $X$ will be:
A wire loop is rotated in a magnetic field. The frequency of change of direction of the induced emf is: