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23 January Evening Shift physics questions with solutions
Browse 23 January Evening Shift Physics questions with solutions. Useful for JEE, NEET, and school exam revision.
Showing 1–10 of 25 questions
- MCQmediumKinematics Part-1 (one dimension)
A paratrooper jumps from an aeroplane and opens a parachute after 2 s of free fall and starts deaccelerating with 3 m/s². At 10 m height from ground, while descending with the help of parachute, the speed of paratrooper is 5 m/s. The initial height of the aeroplane is _____m.
(g = 10 m/s²)
Options
JEE Mains 202623 January Evening Shift
Open question & full solution → - MCQeasyNuclear physics
Which of the following pair of nuclei are isobars of the element ?
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JEE Mains 202623 January Evening Shift
Open question & full solution → - NumericmediumGeometrical optics
The size of the images of an object, formed by a thin lens are equal when the object is placed at two different positions 8 cm and 24 cm from the lens. The focal length of the lens is ________ cm.
JEE Mains 202623 January Evening Shift
Open question & full solution → - Multi-correctmediumGeometrical optics
A prism of angle 75° and refractive index √3 is coated with thin film of refractive index 1.5 only at the back exit surface. To have total internal reflection at the back exit surface the incident angle must be _______.
(sin 15° = 0.25 and sin 25° = 0.43)
Select all that apply
JEE Mains 202623 January Evening Shift
Open question & full solution → - MCQmediumElectromagnetic Induction
A circular loop of radius 7 cm is placed in uniform magnetic field of 0.2 T directed perpendicular to plane of loop. The loop is converted into a square loop in 0.5 s. The EMF induced in the loop is ___________ mV.
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JEE Mains 202623 January Evening Shift
Open question & full solution → - NumericmediumUnit dimension and error
A ball of radius r and density ρ dropped through a viscous liquid of density σ and viscosity η attains its terminal velocity at time t, given by t = Aρᵃrᵇηᶜσᵈ, where A is a constant and a, b c and d are integers. The value of (b + c)/(a + d) is ______.
JEE Mains 202623 January Evening Shift
Open question & full solution → - NumericmediumRotational Motion
Suppose there is a uniform circular disc of mass M kg and radius r m shown in figure. The shaded regions are cut out from the disc. The moment of inertia of the remainder about the axis A of the disc is given by xMr²/256. The value of x is _________.
JEE Mains 202623 January Evening Shift
Open question & full solution → - MCQmediumKinematics Part-1 (one dimension)
A bead P sliding on a frictionless semi-circular string (ACB) and it is at point S at t = 0 and at this instant the horizontal component of its velocity is v. Another bead Q of the same mass as P is ejected from point A at t = 0 along the horizontal string AB, with the speed v, friction between the beads and the respective strings may be neglected in both cases. Let and be the respective times taken by beads P and Q to reach the point B, then the relation between and is
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JEE Mains 202623 January Evening Shift
Open question & full solution → - MCQmediumThermodynamics
The internal energy of a monoatomic gas is 3nRT. One mole of helium is kept in a cylinder having internal cross section area of 17 cm² and fitted with a light movable frictionless piston. The gas is heated slowly by suppling 126 J heat. If the temperature rises by 4 °C, then the piston will move______cm.
(atmospheric pressure = 10⁵ Pa)
Options
JEE Mains 202623 January Evening Shift
Open question & full solution → - MCQmediumProperties of solid and fluid
A small metallic sphere of diameter 2 mm and density 10.5 g/cm³ is dropped in glycerine having viscosity 10 Poise and density 1.5 g/cm³ respectively. The terminal velocity attained by the sphere is ________ cm/s.
(π = 22/7 and g = 10 m/s²)
Options
JEE Mains 202623 January Evening Shift
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