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Physics · 2018 · 15 Apr · Shift 1

26 questions from this JEE Main paper

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2018 · 15 Apr · Shift 1
Physics

Physics · 2018 · 15 Apr · Shift 1

26 questions from this JEE Main paper

Electromagnetic Waves1 questions Current Electricity2 questions Geometrical Optics2 questions Rotational Motion2 questions Electrostatics2 questions Motion in A Straight Line2 questions Units and Measurements2 questions Dual Nature of Radiation1 questions Atoms and Nuclei1 questions Magnetics1 questions Wave Optics1 questions Waves1 questions Heat and Thermodynamics1 questions Properties of Matter1 questions Gravitation2 questions Laws of Motion1 questions Capacitor1 questions Alternating Current1 questions Magnetic Properties of Matter1 questions

Q48.A monochromatic beam of light has a frequency $v = \frac{3}{2 π} \times 1 0^{12} H z$ and is propagating along the direction $\frac{i + j}{2} .$ It is polarized along the $k$ direction. The…
Physics · Electromagnetic Waves · MCQ
Q49.In a meter bridge, as shown in the figure, it is given that resistance $Y = 12.5 Ω$ and that the balance is obtained at a distance $39.5 c m$ from end $A$ (by Jockey J). After interchanging the resistances $X$ and $Y$ , a new balance… Includes diagram
Physics · Current Electricity · MCQ
Q50.A particle is oscillating on the $X$ -axis with an amplitude $2 c m$ about the point $x_{0} = 10 c m,$ with a frequency $ω$ . A concave mirror of local length $5 c m$ is placed at the origin (see figure). Identify the correct statements. Includes diagram
Physics · Geometrical Optics · MCQ
Q51.A force of $40 N$ acts on a point $B$ at the end of an $L$ -shaped object, as shown in the figure. The angle $θ$ that will produce maximum moment of the force about point $A$ is given by : Includes diagram
Physics · Rotational Motion · MCQ
Q52.A charge $Q$ is placed at a distance $a /2$ above the center of the square surface of edge a as shown in the figure. The electric flux through the square surface is Includes diagram
Physics · Electrostatics · MCQ
Q53.The velocity-time graphs of a car and a scooter are shown in the figure. (i) The difference between the distance travelled by the car and the scooter in $15 s$ and (ii) the time at which the car will catch up with the scooter are,… Includes diagram
Physics · Motion in A Straight Line · MCQ
Q54.In a screw gauge, $5$ complete rotations of the screw cause it to move a linear distance of $0.25 c m .$ There are $100$ circular scale divisions. The thickness of a wire measured by this screw gauge gives a reading of $4$ main scale…
Physics · Units and Measurements · MCQ
Q55.Two electrons are moving with non-relativistic speed perpendicular to each other. If corresponding de Broglie wavelength are $λ_{1}$ and $λ_{2},$ their de Broglie wavelength in the frame of reference attached to their center…
Physics · Dual Nature of Radiation · MCQ
Q56.The energy required to remove the electron from a singly ionized Helium atom is $2.2$ times the energies required to remove an electron from Helium atom. The total energy required to ionize the Helium atom completely is :
Physics · Atoms and Nuclei · MCQ
Q57.A planoconvex lens becomes an optical system of $28 c m$ focal length when its plane surface is silvered and illuminated from left to right as shown in Fig-A. If the same lens is instead silvered on the curved surface and illuminated from… Includes diagram
Physics · Geometrical Optics · MCQ
Q58.A Helmholtz coil has a pair of loops, each with $N$ turns and radius $R$ . They are placed coaxially at distance $R$ and the same current $I$ flows through the loops in the same direction. $P,$ midway between the centers $A$ and $C$ ,… Includes diagram
Physics · Magnetics · MCQ
Q59.Light of wavelength $550 nm$ falls normally on a slit of width $22.0 \times 1 0^{- 5} c m .$ The angular position of the second minima from the central maximum will (in radians) :
Physics · Wave Optics · MCQ
Q60.A tuning fork vibrates with frequency $256 H z$ and gives one beat per second with the third normal mode of vibration of an open pipe. What is the length of the pipe ? (Speed of sound in air is $340 m s^{- 1}$ )
Physics · Waves · MCQ
Q61.A body of mass $M$ and charge $q$ is connected to spring of spring constant $k .$ It is oscillating along $x$ -direction about its equilibrium position, taken to be at $x = 0,$ with an amplitude $A$ . An electric field $E$ is applied along the $x$ …
Physics · Electrostatics · MCQ
Q62.One mole of an ideal monoatomic gas is compressed isothermally in a rigid vessel to double its pressure at room temperature, $2 7^{\circ} C .$ The work done on the gas will be :
Physics · Heat and Thermodynamics · MCQ
Q63.A thin uniform tube is bent into a circle of radius $r$ in the vertical plane. Equal volumes of two immiscible liquids, whose densities are $ρ_{1}$ and $ρ_{2}$ $(ρ_{1} > ρ_{2}),$ fill half the circle. The…
Physics · Properties of Matter · MCQ
Q64.Take the mean distance of the moon and the sun from the earth to be $0.4 \times 1 0^{6}$ km and $150 \times 1 0^{6}$ km respectively. Their masses are $8 \times 1 0^{22}$ kg and $2 \times 1 0^{30}$ kg respectively. The radius of the earth…
Physics · Gravitation · MCQ
Q65.The relative error in the determination of the surface area of sphere is $α$ . Then the relative error in the determination of its volume is :
Physics · Units and Measurements · MCQ
Q66.An automobile, travelling at $40$ km/h, can be stopped at a distance of $40$ m by applying brakes. If the same automobile is travelling at $80$ km/h, the minimum stopping distance, in metres, is (assume no skidding) :
Physics · Motion in A Straight Line · MCQ
Q67.A body of mass m is moving in a circular orbit of radius R about a planet of mass M. At some instant, it splits into two equal masses. The first mass moves in a circular orbit of radius $\frac{R}{2},$ and the other mass, in a circular…
Physics · Gravitation · MCQ
Q68.A given object takes n times more time to slide down a $4 5^{\circ}$ rough inclined plane as it takes to slide down a perfectly smooth $4 5^{\circ}$ incline. The coefficient of kinetic friction between the object and the incline is :
Physics · Laws of Motion · MCQ
Q69.The equivalent capacitance between $A$ and $B$ in the circuit given below, is : Includes diagram
Physics · Capacitor · MCQ
Q70.A uniform rod $A B$ is suspended from a point $X,$ at a variable distance $x$ from $A$ , as shown, To make the rod horizontal, a mass $m$ is suspended from its end $A .$ A $se t o f$ (m,x)$$ values is recorded. The appropriate variables that… Includes diagram
Physics · Rotational Motion · MCQ
Q71.An ideal capacitor of capacitance $0.2 μ F$ is charged to a potential difference of $10 V .$ The charging battery is then disconnected. The capacitor is then connected to an ideal inductor of self inductance $0.5 m H .$ The current at a time…
Physics · Alternating Current · MCQ
Q72.In the given circuit all resistances are of value $R o hm$ each. The equivalent resistance between $A$ and $B$ is : Includes diagram
Physics · Current Electricity · MCQ
Q73.The $B$ - $H$ curve for a ferromagnet is shown in the figure. The ferromagnet is placed inside a long solended with $1000$ turns/cm. The current that should be passed in the solended to demagnetise the ferromagnet completely is : Includes diagram
Physics · Magnetic Properties of Matter · MCQ