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The value of Planck's constant in SI units is:
NET
NUST Entry Test
Physics
Dawn of Modern Physics
From the theory of relativity, the momentum $\rho$ of the photon is expressed as:
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Physics
Dawn of Modern Physics
The value of Stefan's constant in SI units is:
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Physics
Dawn of Modern Physics
The value of Wien's constant in SI units is:
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Physics
Dawn of Modern Physics
The ratio of energy E to the corresponding frequency (f) of the radiation (emitted or absorbed) is called:
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Physics
Dawn of Modern Physics
Planck suggested that energy is radiated or absorbed:
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Physics
Dawn of Modern Physics
The radiation energy:
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Physics
Dawn of Modern Physics
Wien's constant is measured in:
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Physics
Dawn of Modern Physics
The product of $\lambda_{m}$ and T is called:
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Physics
Dawn of Modern Physics
The intensity of emitted energy (with wavelength) radiated from a black body at different temperature was initially measured by:
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Physics
Dawn of Modern Physics
Black color is:
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Dawn of Modern Physics
As the platinum wire is heated, its color changes from:
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Physics
Dawn of Modern Physics
When platinum wire is heated, then at the temperature of $500^{\circ}C$, it becomes:
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Physics
Dawn of Modern Physics
As the temperature of a hot body rises, the proportion of:
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Physics
Dawn of Modern Physics
A radiation of longer wavelength:
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Physics
Dawn of Modern Physics
At high temperature, the hot body emits radiations of:
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Physics
Dawn of Modern Physics
At low temperature, the hot body emits radiations of:
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Physics
Dawn of Modern Physics
The nature of radiations emitted by a hot body depends upon its:
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Physics
Dawn of Modern Physics
By taking the relatively effects into account, the location and speed anywhere on Earth can be determined to an accuracy of about:
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Dawn of Modern Physics
It implies from $\triangle m=\frac{\triangle E}{c^{2}}$ that to get even a small increase in mass of an object, we require:
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Physics
Dawn of Modern Physics
According to special theory of relativity, mass and energy are:
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Physics
Dawn of Modern Physics
When the atomic particles are moving with velocities approaching that of light:
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Physics
Dawn of Modern Physics
The ratio of speed of light to the orbital speed of Earth is:
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Physics
Dawn of Modern Physics
Earth's orbital speed is:
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Physics
Dawn of Modern Physics
Mass of an object:
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Physics
Dawn of Modern Physics
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