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The reagent 'R' in the given sequence of chemical reaction is:
When light propagates through a material medium of relative permittivity $\epsilon_r$ and relative permeability $\mu_r$, the velocity of light, $v$ is given by (c-velocity of light in vacuum)
Which is the "Only enzyme" that has "Capability" to catalyse Initiation, Elongation and Termination in the process of transcription in prokaryotes?
An electric dipole is placed at an angle of $30^\circ$ with an electric field of intensity $2 \times 10^5$ N C$^{-1}$. It experiences a torque equal to 4 N m. Calculate the magnitude of charge on the dipole, if the dipole length is 2 cm.
Match the following: List-I (a) Physalia (b) Limulus (c) Ancylostoma (d) Pinctada List-II (i) Pearl oyster (ii) Portuguese Man of War (iii) Living fossil (iv) Hookworm
Read the following statements (a) Metagenesis is observed in Helminths. (b) Echinoderms are triploblastic and coelomate animals. (c) Round worms have organ-system level of body organization. (d) Comb plates present in ctenophores help in digestion. (e) Water vascular system is characteristic of Echinoderms. Choose the correct answer from the options given below.
A shell of mass $m$ is at rest initially. It explodes into three fragments having mass in the ratio $2:2:1$. If the fragments having equal mass fly off along mutually perpendicular directions with speed $v$, the speed of the third (lighter) fragment is
Given below are two statements: Statement I: Photovoltaic devices can convert optical radiation into electricity. Statement II: Zener diode is designed to operate under reverse bias in breakdown region. In the light of the above statements, choose the most appropriate answer from the options given below.
Statement I: The codon 'AUG' codes for methionine and phenylalanine. Statement II: 'AAA' and 'AAG' both codons code for the amino acid lysine. In the light of the above statements, choose the correct answer from the options given below.
A wire carrying a current $I$ along the positive x-axis has length $L$. It is kept in a magnetic field $\vec{B} = (2\hat{i} + 3\hat{j} - 4\hat{k}) \text{ T}$. The magnitude of the magnetic force acting on the wire is
Which of the following characteristics is incorrect with respect to cockroach?
Match List-I with List-II. List-I: (a) Gravitational constant (G), (b) Gravitational potential energy, (c) Gravitational potential, (d) Gravitational intensity. List-II: (i) $[L^2T^{-2}]$, (ii) $[M^1L^3T^{-2}]$, (iii) $[LT^{-2}]$, (iv) $[ML^2T^{-2}]$. Choose the correct answer from the options given below.
For Young's double slit experiment, two statements are given below: Statement I : If screen is moved away from the plane of slits, angular separation of the fringes remains constant. Statement II : If the monochromatic source is replaced by another monochromatic source of larger wavelength, the angular separation of fringes decreases. In the light of the above statements, choose the correct answer from the options given below:
For the following logic circuit, the truth table is
A ball is projected with a velocity, $10 \text{ ms}^{-1}$, at an angle of $60^\circ$ with the vertical direction. Its speed at the highest point of its trajectory will be:
The truth table for the given logic circuit is
A series LCR circuit with inductance $10\text{ H}$, capacitance $10\text{ }\mu\text{F}$, resistance $50\text{ }\Omega$ is connected to an ac source of voltage, $V = 200\sin(100\pi t)\text{ volt}$. If the resonant frequency of the LCR circuit is $f_0$ and the frequency of the ac source is $f$, then
The resistance of platinum wire at $0^{\circ}\text{C}$ is $2 \text{ } \Omega$ and $6.8 \text{ } \Omega$ at $80^{\circ}\text{C}$. The temperature coefficient of resistance of the wire is
Anthesis is a phenomenon that refers to:
In grasses, what happens in the microspore mother cell for the formation of mature pollen grains?