Recent questions in 2002

Electromagnetic waves are transverse in nature is evident by :

asked Dec 11, 2018 by pady_1

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At absolute zero, Si acts as :

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Heat given to a body which raises its temperature by $1^{\circ}C$ is :

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If a current is passed through a spring then the spring will :

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Two identical particle move towards each other with velocity $ 2v$ and $v$ respectively. The velocity of centre of mass is :

asked Dec 11, 2018 by pady_1

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Wavelength of light used in optical instrument are $\lambda_1 = 4000 \mathring{A}$ and $\lambda_2 = 5000 \mathring{A}$, then ratio of their respective resolving powers (corresponding to $\lambda_1$ and $\lambda_2$) is :

asked Dec 11, 2018 by pady_1

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If in the circuit, power dissipation is 150 W, then $R$ is : <br>

asked Dec 11, 2018 by pady_1

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A charged particle $q$ is placed at the centre $O$ of cube of length $L \;(ABCDEFGH)$. Another same charge $q$ is placed at a distance $L$ from $O$. Then the electric flux through $ABCD$ is : <br>

asked Dec 11, 2018 by pady_1

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If a spring has time period T, and is cut into $n$equal parts, then the time period of each part will be :

asked Dec 11, 2018 by pady_1

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Energy required to move a body of mass $m$ from an orbit of radius $2R$ and $3R$ is :

asked Dec 11, 2018 by pady_1

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If an electron and proton having same momenta enter perpendicularly to a magnetic field, then :

asked Dec 11, 2018 by pady_1

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On moving a charge of 20 C by 2 cm, 2J of work is done, then the potential difference between the points is :

asked Dec 11, 2018 by pady_1

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A wave $y =a \sin (wt-kx)$ on a string meets with another wave producing a node at $x=0$. Then the equation of the unknown wave is :

asked Dec 11, 2018 by pady_1

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A tuning fork arrangement (pair) produces 4 beats/s with one fork of frequency 288 cps. A little wax is placed on the unknown fork and it then produces 2 beats/s. The frequency of the unknown fork is :

asked Dec 11, 2018 by pady_1

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Tube A has both ends open while tube B has one end closed, otherwise they are identical. The raio of fundamental frequency of tubes A and B is :

asked Dec 11, 2018 by pady_1

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If 13.6 eV energy is required to ionize the hydrogen atom, then the energy required to remove an electrons from $n=2$ is :

asked Dec 11, 2018 by pady_1

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A wire when connected to 220 V mains supply has power dissipation $P_1$. Now the wire is cut into two equal piece which are connected in parallel to the same supply. Power dissipation in this case is $P_2$. Then $P_2 : P_1$ is :

asked Dec 11, 2018 by pady_1

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If two mirrors are kept at $ 60^{\circ}$ to each other, then the number of images formed by them is :

asked Dec 11, 2018 by pady_1

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If in a circular coil $A$ of radius $R$, current $i$ is flowing and in another coil $B$ of radius $2R$ a current $2i$ is flowing, then the ratio of the magnetic fields, $B_A$ and $B_B$ produced by them will be :

asked Dec 11, 2018 by pady_1

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If an ammeter is to be used in place of a voltmeter, then we must connect with the ammeter a :

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If suddenly the gravitational force of attraction between earth and a satellite revolving around it becomes zero, then the satellite will :

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If a body loses hald of its velocity on penetrating 3 cm in a wooden block, then how much will it penetrate more before coming to rest ?

asked Dec 11, 2018 by pady_1

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From a building two balls A and B are thrown such that A is thrown upwards and B downwards (both vertically). If $\nu_A$ and $\nu_B$ are their respective velocities on reaching the ground, then :

asked Dec 11, 2018 by pady_1

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A ball whose kinetic energy is E, is projected at an angle of $45^{\circ}$ to the horizontal. The kinetic energy of the ball at the highest point of its flight will be:

asked Dec 11, 2018 by pady_1

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The inductance between A and D is : <br>

asked Dec 11, 2018 by pady_1

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