freejee866@gmail.com - NEET JEE RANKERS - Page 30 of 99

Skip to content

NEET JEE RANKERS

Contact Us
Disclaimer
Neet and jee mains+ advanced free study material, notes and free mock tests!
privacy policy

NEET JEE RANKERS

Contact Us
Disclaimer
Neet and jee mains+ advanced free study material, notes and free mock tests!
privacy policy

The energy required by electrons, present in the first Bohr orbit of hydrogen atom to be excited to second Bohr orbit is _____ J mol⁻¹. Given: RH = 2.18 × 10⁻¹¹ ergs.

The energy required by electrons present in the first Bohr orbit of hydrogen atom to be excited to second Bohr […]

Given below are two statements : Statement I : Phenol on treatment with CHCl3/aq. KOH under refluxing condition, followed by acidification produces p-hydroxy benzaldehyde as the major product and o-hydroxy benzaldehyde as the minor product. Statement II : The mixture of p-hydroxybenzaldehyde and o-hydroxybenzaldehyde can be easily separated through steam distillation. In the light of the above statements, choose the correct answer from the options given below.

Given below are two statements Phenol on treatment with CHCl3 aq KOH Q. Given below are two statements : Statement

A parallel beam of light travelling in air (refractive index 1.0) is incident on a convex spherical glass surface of radius of curvature 50 cm. Refractive index of glass is 1.5. The rays converge to a point at a distance x cm from the centre of the curvature of the spherical surface. The value of x is _____ cm.

A parallel beam of light travelling in air is incident on a convex spherical glass surface Q. A parallel beam

A circular disc has radius R₁ and thickness T₁. Another circular disc made of the same material has radius R₂ and thickness T₂. If the moment of inertia of both discs are same and R₁/R₂ = 2 then T₁/T₂ = 1/α. The value of α is _____.

A circular disc has radius R1 and thickness T1. Another circular disc made of the same material Q. A circular

The electric field of a plane electromagnetic wave, travelling in an unknown nonmagnetic medium is given by, E_y = 20 sin (3 × 10^6 x − 4.5 × 10^14 t) V/m (where x, t and other values have S.I. units). The dielectric constant of the medium is _____. (speed of light in free space is 3 × 10^8 m/s)

The electric field of a plane electromagnetic wave, travelling in an unknown nonmagnetic medium is given by Q. The electric

Inductance of a coil with 10^4 turns is 10 mH and it is connected to a dc source of 10 V with internal resistance of 10Ω. The energy density in the inductor when the current reaches (1/e) of its maximum value is απ × 1/e^2 J/m^3. The value of α is _____. (μ0 = 4π × 10^−7 Tm/A)

Inductance of a coil with 10^4 turns is 10 mH and it is connected to a dc source of 10

The minimum frequency of photon required to break a particle of mass 15.348 amu into 4α particles is _____ kHz. [mass of He nucleus = 4.002 amu, 1 amu = 1.66 × 10⁻²⁷ kg, h = 6.63 × 10⁻³⁴ J·s and c = 3 × 10⁸ m/s]

The minimum frequency of photon required to break a particle of mass 15.348 amu into 4α particles is Q. The

The volume of an ideal gas increases 8 times and temperature becomes (1/4)th of initial temperature during a reversible change. If there is no exchange of heat in this process (ΔQ = 0) then identify the gas from the following options (Assuming the gases given in the options are ideal gases):

The volume of an ideal gas increases 8 times and temperature becomes (1/4)th of initial temperature during a reversible change.

A thin convex lens of focal length 5 cm and a thin concave lens of focal length 4 cm are combined together (without any gap) and this combination has magnification m₁ when an object is placed 10 cm before the convex lens. Keeping the positions of convex lens and object undisturbed a gap of 1 cm is introduced between the lenses by moving the concave lens away, which lead to a change in magnification of total lens system to m₂. The value of | m₁ / m₂ | is _____.

A thin convex lens of focal length 5 cm and a thin concave lens of focal length 4 cm are

Three identical coils C1, C2 and C3 are closely placed such that they share a common axis. C2 is exactly midway. C1 carries current I in anti-clockwise direction while C3 carries current I in clockwise direction. An induced current flows through C2 will be in clockwise direction when

Three identical coils C1, C2 and C3 are closely placed such that they share a common axis. C2 is exactly

← Previous 1 … 29 30 31 … 99 Next →

Scroll to Top