Umakant Kondapure, Collin Fernandes, Nipun Bhatia, Vikram Bathula and, Ketki Deshpande Solutions for Chapter: Model Question Paper, Exercise 2: Model Question Paper - II

An electron cannot be occupied in

Beats are produced by the superimposition of two waves of nearly equal frequencies. Which of the following statements is correct?

Two circular discs $A$ and $B$ with equal radii are blackened. These are being cooled under identical circumstances. What inference can be drawn from their cooling curves?

Gyromagnetic ratio is a ratio of charge to

Which of the following is the fusion reaction?

Light is incident at an angle $i$ on a glass slab. The reflected ray is completely polarised. The angle of refraction is

A plank with a box on it at one end is gradually raised about the other end. As the angle of inclination with the horizontal reaches $30^{\circ},$ the box starts to slip and slides $4 \mathrm{m}$ down the plank in $4 \mathrm{s}$. The coefficients of static and kinetic friction between the box and the plank will be, respectively [Take$\mathrm{g}=10 \mathrm{m} {\mathrm{s}}^{-2}$]

If length of a closed organ pipe is $1  \mathrm{m}$ and velocity of sound is $330 \mathrm{m} {\mathrm{s}}^{-1},$ then the frequency of $1^{\text {st }}$ overtone is