Practice Set 1
The linear mass density of a thin rod AB of length L varies from A to B as λ(x) = λ0 ( 1+ X/L ), Where x is the distance from A. If M is the mass of the rod then its moment of inertia about an axis passing through A and perpendicular to the rod is
19
Sep
The linear mass density of a thin rod AB of length L varies from A to B as λ(x) = λ0 ( 1+ X/L ), Where x is the distance from A. If M is the mass of the rod then its moment of inertia about an axis passing through A and perpendicular to the [...]
Assuming the nitrogen molecule is moving with r.m.s. velocity at 400 K, the de-Broglie wavelength of nitrogen molecule is close to (Given : nitrogen molecule weight : 4.64 × 10^–26 kg, Boltzman constant : 1.38 × 10^–23 J/K, Planck constant : 6.63 × 10^–34 J.s)
19
Sep
Assuming the nitrogen molecule is moving with r.m.s. velocity at 400 K, the de-Broglie wavelength of nitrogen molecule is close to (Given : nitrogen molecule weight : 4.64 × 10^–26 kg, Boltzman constant : 1.38 × 10^–23 J/K, Planck constant : 6.63 × 10^–34 J.s) Assuming the nitrogen molecule is moving with r.m.s. velocity at [...]
In a dilute gas at pressure P and temperature T, the mean time between successive collisions of a molecule varies with T as
19
Sep
In a dilute gas at pressure P and temperature T, the mean time between successive collisions of a molecule varies with T as In a dilute gas at pressure P and temperature T the mean time between successive collisions of a molecule varies with T as September 19, 2021 Category: JEE Mains Physics 2002-2019 Solved [...]
When a particle of mass m is attached to a vertical spring of spring constant k and released, its motion is described by y(t) = y0sin^2ωt, where ‘y’ is measured from the lower end of unstretched spring. Then ω is
19
Sep
When a particle of mass m is attached to a vertical spring of spring constant k and released, its motion is described by y(t) = y0sin^2ωt, where ‘y’ is measured from the lower end of unstretched spring. Then ω is its motion is described by y(t) = y0sin^2ωt When a particle of mass m is [...]
A fluid is flowing through a horizontal pipe of varying cross-section, with speed v ms–1 at a point where the pressure is P pascal. At another point where pressure is P/2 pascal its speed is V ms^-1. If the density of the fluid is ρ kg m^–3 and the flow is streamline, then V is equal to :
19
Sep
A fluid is flowing through a horizontal pipe of varying cross-section, with speed v ms–1 at a point where the pressure is P pascal. At another point where pressure is P/2 pascal its speed is V ms^-1. If the density of the fluid is ρ kg m^–3 and the flow is streamline, then V is [...]
A square loop of side 2a and carrying current I is kept in xz plane with its centre at origin. A long wire carrying the same current I is placed parallel to z-axis and passing through point (0, b, 0), (b >> a). The magnitude of torque on the loop about z-axis will be
19
Sep
A square loop of side 2a and carrying current I is kept in xz plane with its centre at origin. A long wire carrying the same current I is placed parallel to z-axis and passing through point (0, b, 0), (b >> a). The magnitude of torque on the loop about z-axis will be (b [...]
A double convex lens has power P and same radii of curvature R of both the surfaces. The radius of curvature of a surface of a plano-convex lens made of the same material with power 1.5 P is
19
Sep
A double convex lens has power P and same radii of curvature R of both the surfaces. The radius of curvature of a surface of a plano-convex lens made of the same material with power 1.5 P is A double convex lens has power P and same radii of curvature R of both the surfaces. [...]
A student measuring the diameter of a pencil of circular cross-section with the help of a vernier scale records the following four readings 5.50 mm, 5.55 mm, 5.45 mm; 5.65 mm. The average of these four readings is 5.5375 mm and the standard deviation of the data is 0.07395 mm. The average diameter of the pencil should therefore be recorded as
19
Sep
A student measuring the diameter of a pencil of circular cross-section with the help of a vernier scale records the following four readings 5.50 mm, 5.55 mm, 5.45 mm; 5.65 mm. The average of these four readings is 5.5375 mm and the standard deviation of the data is 0.07395 mm. The average diameter of the [...]
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5.45 mm; 5.65 mm. The average of these four readings is 5.5375 mm and the standard deviation of the data is 0.07395 mm. The average diameter of the pencil should therefore be recorded as ,
5.55 mm ,
A student measuring the diameter of a pencil of circular cross-section with the help of a vernier scale records the following four readings 5.50 mm ,
Consider the force F on a charge ‘q’ due to a uniformly charged spherical shell of radius R carrying charge Q distributed uniformly over it. Which one of the following statements is true for F, if ‘q’ is placed at distance r from the centre of the shell ?
19
Sep
Consider the force F on a charge ‘q’ due to a uniformly charged spherical shell of radius R carrying charge Q distributed uniformly over it. Which one of the following statements is true for F, if ‘q’ is placed at distance r from the centre of the shell ? Consider the force F on a [...]
A circuit to verify Ohm’s law uses ammeter and voltmeter in series or parallel connected correctly to the resistor. In the circuit
19
Sep
A circuit to verify Ohm’s law uses ammeter and voltmeter in series or parallel connected correctly to the resistor. In the circuit A circuit to verify Ohm’s law uses ammeter and voltmeter in series or parallel connected correctly to the resistor. In the circuit September 19, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions [...]