If two soap bubbles of different radii are connected by a tube
If two soap bubbles of different radii are connected by a tube
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(a) Air flows from the bigger bubble to the smaller bubble till the sizes become equal (b) Air flows from the […]
AIEEE2004
One solid sphere A and another hollow sphere B are of same mass and same outer radii.
One solid sphere A and another hollow sphere B are of same mass and same outer radii. Their moments of inertia about their diameters are respectively Iᴀ and Iʙ such that
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(a) […]
A satellite of mass m revolves around the earth of radius R at a height x from
A satellite of mass m revolves around the earth of radius R at a height x from its surface. If g is the acceleration due to gravity on the surface of the earth, the orbital […]
The maximum number of possible interference maxima for slit-seperation equal to
The maximum number of possible interference maxima for slit-seperation equal to twice the wavelength, in young’s double slit experiment is
Options
(a) Infinite (b) five (c) three (d) zero
Correct Answer:
five
Explanation:
For […]
The manifestation of band structure in solids is due to
The manifestation of band structure in solids is due to
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(a) Heisenberg’s uncertainty principle (b) Pauli’s exclusion principle (c) Bohr’s correspondence principle (d) Boltzmann’s law
Correct Answer:
Pauli’s exclusion principle
Explanation:
No […]
In an LCR circuit, capacitance is changed from C to 2C. For the resonant frequency
In an LCR circuit, capacitance is changed from C to 2C. For the resonant frequency to remain unchanged, the inductance should be changed from L to
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(a) 4 L (b) 2 L (c) […]
The material suitable for making electromagnets should have
The material suitable for making electromagnets should have
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(a) High retentivity and high coercivity (b) Low retentivity and low coercivity (c) high retentivity and low coercivity (d) Low retentivity and high coercivity
The work function of a substance is 4.0 eV. The longest wavelength of light
The work function of a substance is 4.0 eV. The longest wavelength of light that can cause photoelectron emission from this substance is approximately
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(a) 540 nm (b) 400 nm (c) 310 nm […]
The binding energy per nucleon in deuterium and helium nuclei are 1.1 MeV and 7.0 MeV
The binding energy per nucleon in deuterium and helium nuclei are 1.1 MeV and 7.0 MeV, respectively. When two deuterium nuclei fuse to form a helium nucleus the energy released in the fusion is:
An α-particle of energy 5 MeV is scattered through 180⁰ by a fixed uranium nucleus.
An α-particle of energy 5 MeV is scattered through 180⁰ by a fixed uranium nucleus. The distance of the closest approach is of the order of
Options
(a) 1Å (b) 10⁻¹⁰ cm (c) […]