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Physics · 2022 · 26 Jul · Shift 1

27 questions from this JEE Main paper

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2022 · 26 Jul · Shift 1
Physics

Physics · 2022 · 26 Jul · Shift 1

27 questions from this JEE Main paper

Laws of Motion2 questions Dual Nature of Radiation1 questions Wave Optics1 questions Electromagnetic Waves1 questions Alternating Current2 questions Magnetics2 questions Current Electricity2 questions Capacitor2 questions Simple Harmonic Motion1 questions Heat and Thermodynamics2 questions Properties of Matter2 questions Gravitation1 questions Work Power and Energy1 questions Motion in A Plane2 questions Units and Measurements1 questions Rotational Motion1 questions Geometrical Optics1 questions Atoms and Nuclei1 questions Electronic Devices1 questions

Q46.Three masses $M = 100 kg, m_{1} = 10 kg$ and $m_{2} = 20 kg$ are arranged in a system as shown in figure. All the surfaces are frictionless and strings are inextensible and weightless. The… Includes diagram
Physics · Laws of Motion · MCQ
Q47.A parallel beam of light of wavelength $900 nm$ and intensity $100 Wm^{- 2}$ is incident on a surface perpendicular to the beam. The number of photons crossing $1 cm^{2}$ area perpendicular to the beam in one…
Physics · Dual Nature of Radiation · MCQ
Q48.In Young's double slit experiment, the fringe width is $12 mm$ . If the entire arrangement is placed in water of refractive index $\frac{4}{3}$ , then the fringe width becomes (in mm):
Physics · Wave Optics · MCQ
Q49.The magnetic field of a plane electromagnetic wave is given by : $B = 2 \times 1 0^{- 8} sin (0.5 \times 1 0^{3} x + 1.5 \times 1 0^{11} t) \hat{j} T$ . The amplitude of the electric…
Physics · Electromagnetic Waves · MCQ
Q50.In a series $L R$ circuit $X_{L} = R$ and power factor of the circuit is $P_{1}$ . When capacitor with capacitance $C$ such that $X_{L} = X_{C}$ is put in series, the power factor becomes $P_{2}$ . The ratio $\frac{P _{1}}{P _{2}}$ is:
Physics · Alternating Current · MCQ
Q51.A charge particle is moving in a uniform magnetic field $(2 \hat{i} + 3 \hat{j}) T$ . If it has an acceleration of $(α \hat{i} - 4 \hat{j}) m / s^{2}$ , then the value of $α$ will be :
Physics · Magnetics · MCQ
Q52. $B_{X}$ and $B_{Y}$ are the magnetic fields at the centre of two coils $X$ and $Y$ respectively each carrying equal current. If coil $X$ has 200 turns and $20 cm$ radius and coil $Y$ …
Physics · Magnetics · MCQ
Q53.The current I in the given circuit will be : Includes diagram
Physics · Current Electricity · MCQ
Q54.The total charge on the system of capacitors $C_{1} = 1 μ F, C_{2} = 2 μ F, C_{3} = 4 μ F$ and $C_{4} = 3 μ F$ connected in parallel is : (Assume a battery of $20 V$ is…
Physics · Capacitor · MCQ
Q55.When a particle executes Simple Hormonic Motion, the nature of graph of velocity as a function of displacement will be :
Physics · Simple Harmonic Motion · MCQ
Q56.7 mol of a certain monoatomic ideal gas undergoes a temperature increase of $40 K$ at constant pressure. The increase in the internal energy of the gas in this process is : (Given $R = 8.3 JK^{- 1} mol^{- 1}$ …
Physics · Heat and Thermodynamics · MCQ
Q57.A monoatomic gas at pressure $P$ and volume $V$ is suddenly compressed to one eighth of its original volume. The final pressure at constant entropy will be :
Physics · Heat and Thermodynamics · MCQ
Q58.A water drop of radius $1 cm$ is broken into 729 equal droplets. If surface tension of water is 75 dyne/ $cm$ , then the gain in surface energy upto first decimal place will be : (Given $π = 3.14$ )
Physics · Properties of Matter · MCQ
Q59.The percentage decrease in the weight of a rocket, when taken to a height of $32 km$ above the surface of earth will, be : $($ Radius of earth $= 6400 km)$
Physics · Gravitation · MCQ
Q60.As per the given figure, two blocks each of mass $250 g$ are connected to a spring of spring constant $2 Nm^{- 1}$ . If both are given velocity $v$ in opposite directions, then maximum elongation of the spring is : Includes diagram
Physics · Work Power and Energy · MCQ
Q61.A monkey of mass $50 kg$ climbs on a rope which can withstand the tension (T) of $350 N$ . If monkey initially climbs down with an acceleration of $4 m / s^{2}$ and then climbs up with an acceleration…
Physics · Laws of Motion · MCQ
Q62.Two projectiles thrown at $3 0^{\circ}$ and $4 5^{\circ}$ with the horizontal respectively, reach the maximum height in same time. The ratio of their initial velocities is :
Physics · Motion in A Plane · MCQ
Q63.A screw gauge of pitch $0.5 mm$ is used to measure the diameter of uniform wire of length $6.8 cm$ , the main scale reading is $1.5 mm$ and circular scale reading is 7 . The calculated curved surface area of…
Physics · Units and Measurements · MCQ
Q64.If the initial velocity in horizontal direction of a projectile is unit vector $\hat{i}$ and the equation of trajectory is $y = 5 x (1 - x)$ . The $y$ component vector of the initial velocity is $\hat{j}$ . ( $Take$ …
Physics · Motion in A Plane · Numerical
Q65.A disc of mass $1 kg$ and radius $R$ is free to rotate about a horizontal axis passing through its centre and perpendicular to the plane of disc. A body of same mass as that of disc is fixed at the highest point of the…
Physics · Rotational Motion · Numerical
Q66.In an experiment to determine the Young's modulus of wire of a length exactly $1 m$ , the extension in the length of the wire is measured as $0.4 mm$ with an uncertainty of $\pm 0.02 mm$ when a load of $1 kg$ …
Physics · Properties of Matter · Numerical
Q67.A composite parallel plate capacitor is made up of two different dielectric materials with different thickness $(t_{1}$ and $t_{2})$ as shown in figure. The two different dielectric materials are separated by a… Includes diagram
Physics · Capacitor · Numerical
Q68.Resistances are connected in a meter bridge circuit as shown in the figure. The balancing length $l_{1}$ is $40 cm$ . Now an unknown resistance $x$ is connected in series with $P$ and new balancing length is found to be $80 cm$ … Includes diagram
Physics · Current Electricity · Numerical
Q69.The effective current I in the given circuit at very high frequencies will be A. Includes diagram
Physics · Alternating Current · Numerical
Q70.The graph between $\frac{1}{u}$ and $\frac{1}{v}$ for a thin convex lens in order to determine its focal length is plotted as shown in the figure. The refractive index of lens is $1.5$ and its both the surfaces have same radius of… Includes diagram
Physics · Geometrical Optics · Numerical
Q71.In the hydrogen spectrum, $λ$ be the wavelength of first transition line of Lyman series. The wavelength difference will be "a $λ$ '' between the wavelength of $3^{rd}$ transition line of Paschen series and that of $2^{nd}$ …
Physics · Atoms and Nuclei · Numerical
Q72.In the circuit shown below, maximum zener diode current will be $mA$ . Includes diagram
Physics · Electronic Devices · Numerical