Q. A solid cylinder of radius 𝑅 has total charge 𝑄 distributed uniformly over its volume. It is rotating about its axis with angular speed 𝜔. The magnitude of the total magnetic moment of the cylinder is Ans: Option (C)
A solid cylinder of radius 𝑅 has total charge 𝑄 distributed uniformly over its volume Read More »
Which of the following options correctly represents the lung conditions in asthma and emphy- sema, respectively? Option 1 : Increased number of bronchioles; Increased respiratory surfaceOption 2 : Increased respiratory surface; Inflammation of bronchiolesOption 3 : Decreased respiratory surface; Inflammation of bronchiolesOption 4 : Inflammation of bronchioles; Decreased respiratory surface
Q. The wave function 𝜓(𝑥) of a particle is as shown below Here 𝐾 is a constant, and 𝑎 > 𝑑. The position uncertainty 〈Δ𝑥〉 of the particle is Ans: Option (B)
The wave function 𝜓(𝑥) of a particle is as shown below Read More »
Q. The electric field of an electromagnetic wave is given by 𝐸⃗→ = 3 sin(𝑘𝑧 − 𝜔𝑡) 𝑥̂ + 4 cos(𝑘𝑧 − 𝜔𝑡) 𝑦̂. The wave is (C) elliptically polarized in clockwise direction when seen travelling towards the observer (D) elliptically polarized in counter-clockwise direction when seen travelling towards the observer Ans: elliptically polarized in counter-clockwise
Q. A conventional type-I superconductor has a critical temperature of 4.7 K at zero magnetic field and a critical magnetic field of 0.3 Tesla at 0 K. The critical field in Tesla at 2 K (rounded off to three decimal places) is Ans: 0.246 Sol:
Q. At temperature T Kelvin (K), the value of the Fermi function at an energy 0.5 eV above the Fermi energy is 0.01. Then T, to the nearest integer, is___________(𝑘B = 8.62 × 10−5 eV/K) Ans: 1262 Sol:
The difference between spermiogenesis and spermiation is Option 1 : Inspermiogenesisspermatozoa are formed, while in spermiation spermatozoa are released from sertoli cells into the cavity of seminiferous tubules.Option 2 : In spermiogenesis spermatids are formed, while in spermiation spermatozoa are formed.Option 3 : In spermiogenesis spermatozoa from sertoli cells are released into the cavity of
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Q. The Hamiltonian for a quantum harmonic oscillator of mass 𝑚 in three dimensions is where 𝜔 is the angular frequency. The expectation value of 𝑟2 in the first excited state of the oscillator in units of (rounded off to one decimal place) is Ans: 2.5 Sol:
The Hamiltonian for a quantum harmonic oscillator of mass 𝑚 in three dimensions is Read More »
The amnion of mammalian embryo is derived from Option 1 : Ectoderm and mesodermOption 2 : Endoderm and mesodermOption 3 : Mesoderm and trophoblastOption 4 : Ectoderm and endoderm
The contraceptive ‘SAHELI’ Option 1 : Is an IUDOption 2 : Blocks estrogen receptors in the uterus, preventing eggs from getting implanted.Option 3 : Increases the concentration of estrogen and prevents ovulation in females.Option 4 : Is a post-coital contraceptive.
