In an AC circuit, if the peak voltage is 20 V, then root mean square (rms) voltage will be

When a light of wavelength 150 nm is incident on silver surface a potential of 3.58 V is required to stop the photoelectrons from reaching the collector plate. Find the potential required to stop photoelectrons when a light of wavelength 200 nm is incident on it ?
(Work function of silver is 4.7 eV)

When two capacitors charged to different potential are connected in parallel the statement which is not true about it is :

\( E_1 \) and \( E_2 \) represents potential and kinetic energies of the orbital electron respectively then:

Match List-I with List-II

List-I (Quantity)	List-II (Formula)
(A) Einstein's Photoelectric Equation	(I) \( K_{max} / e \)
(B) De-Broglie Wavelength	(II) \( K_{max} = hc/\lambda - \phi \)
(C) Stopping potential	(III) \( hc/\phi \)
(D) Threshold wavelength	(IV) \( h/p \)

Choose the correct answer from the options given below:

An a.c. voltage is applied to a resistor of resistance \(5 \Omega\) and an inductor having inductive reactance \(5 \Omega\) connected in series. The phase difference between the applied voltage and the current in the circuit is:

Identify the correct statements among the following.
(A) Inside a conductor, electrostatic field is non-zero
(B) Electrostatic potential is constant throughout the volume of the conductor and has the same value (as inside) on its surface
(C) In a conductor with a cavity, with no charges inside the cavity, the electric field inside the cavity is non-zero, whatever be the size and shape of the cavity
(D) At the surface of a charged conductor, electrostatic field must be normal to the surface at every point.
Choose correct answer from the options given below:

In reference to Inferential Statistics, for 20 degrees of freedom, the least statistical t-value among the given below is:

Which of the following statements are correct?
(A) Kirchhoff's loop rule represents energy conservation.
(B) Resistivity is a property of the material and depends on temperature.
(C) The electrical conductivity of the material does not depend on the material of the conductor and its temperature.
(D) The emf of a battery equals the potential difference between its terminals when the terminals are connected externally.
Choose the correct answer from the options given below:

Two point charges \( 2 \, \mu\text{C} \) and \( 3 \, \mu\text{C} \) are placed at a distance of 5 cm from each other. The magnitude of the electrostatic force between them is:

A tub contains \(60\) litres of milk. From this tub, \(6\) litres of milk was taken out and replaced with water. This whole process was repeated further two more times. How much milk is there in the tub now?

In a double slit experiment, the distance between slits is increased 10 times whereas their distance from screen is halved, then what is the fringe width ?

Read the passage carefully and answer the questions
Biomolecules are the organic compounds present as an essential constituents of living organisms in different cells.Themolecules are generally termed as macromolecules, which are carbohydrates, enzymes, nucleic acids, amino acids andproteins etc. Carbohydrates are classified as sugars and non-sugars include sucrose, glucose, fructose, starch and cellulose. Enzymes are coordinated with various chemical reactions in nucleic acid. Nucleic acids are found in living organisms made up of proteins and natural polymers. Two types that are generally found in biological systems are DNA and RNA nucleic acid. Amino acids are bifunctional groups of carboxyl and amino groups. Proteins are a class of biologically important compounds. They are crucial to virtually all processes in living systems. Some of them are hormones, which serve as chemical messengers that coordinate certain biochemical activities.
Cane sugar on boiling with HCI or \(\ H_2SO_4\) hydrolysis yields