A wire elongates by l mm when a load W is hanged from it. If the wire goes over
A wire elongates by l mm when a load W is hanged from it. If the wire goes over a pulley and two weights W each are hung at the two ends, the elongation of […]
AIEEE2006
Consider a two particle system with particle having masses m₁ and m₂. If the first
Consider a two particle system with particle having masses m₁ and m₂. If the first particle is pushed towards the centre of mass through a distance d, by what distance should the second particle be […]
The ‘rad’ is the correct unit used to report the measurement of
The ‘rad’ is the correct unit used to report the measurement of
Options
(a) the rate of decay of radioactive source (b) the ability of a beam of gamma ray photons to produce […]
The work of 146 kJ is performed in order to compress one kilo mole fo gas adiabatically
The work of 146 kJ is performed in order to compress one kilo mole fo gas adiabatically and in this process the temperature of the gas increases by 7⁰C. The gas is (R=8.3 J mol⁻¹ […]
Two spherical conductors A and B of radii 1 mm and 2 mm are separated by a distance
Two spherical conductors A and B of radii 1 mm and 2 mm are separated by a distance of 5 cm and are uniformly charged. If the spheres are connected by a conducting wire, then […]
In common base mode of a transistor, the collector current is 5.488 mA
In common base mode of a transistor, the collector current is 5.488 mA for an emitter current of 5.60 mA. The value of the base current amplification factor (β) will be
Options
(a) […]
The time by a photoelectron to come out after the photon strikes is approximately
The time by a photoelectron to come out after the photon strikes is approximately
Options
(a) 10⁻¹ s (b) 10⁻⁴ s (c) 10⁻¹⁰ s (d) 10⁻¹⁶s
Correct Answer:
10⁻¹⁰ s
Explanation:
Emission of photo-electron […]
The threshold frequency for a metallic surface corresponds to an energy of 6.2 eV,
The threshold frequency for a metallic surface corresponds to an energy of 6.2 eV, and the stopping potential for a radiation incident on this surface 5 V. The incident radiation lies in
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The resistance of a bulb filament is 100 Ω at a temperature of 100⁰C.
The resistance of a bulb filament is 100 Ω at a temperature of 100⁰C. If its temperature coefficient of resistance be 0.005 per ⁰C, its resistance will become 200Ω at a temperature of
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The kirchoff’s first law (∑i=0) and second law (∑iR=∑E), where the symbols
The kirchoff’s first law (∑i=0) and second law (∑iR=∑E), where the symbols have their usual meanings, are respectively based on
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(a) conservation of charge, conservation of energy (b) conservation of charge, conservation […]