A metal plate weighing 750g is to be electroplated with 0.05% of its weight of silver.
A metal plate weighing 750g is to be electroplated with 0.05% of its weight of silver. If a current of…
8 years ago
Physics
A 1Ω resistance in series with an ammeter is balanced by 75 cm of potentiometer wire
A 1Ω resistance in series with an ammeter is balanced by 75 cm of potentiometer wire. A standard cell of…
8 years ago
The wavelength of kα, X-rays produced by an X-ray tube 0.76Å. The atomic number
The wavelength of kα, X-rays produced by an X-ray tube 0.76Å. The atomic number of the anode material of the…
8 years ago
According to Bohr model of hydrogen atom, only those orbits are permissible
According to Bohr model of hydrogen atom, only those orbits are permissible which satisfy the condition Options (a) mv=nh (b)…
8 years ago
A galvanometer coil has a resistance of 15 ohm and gives full scale deflection
A galvanometer coil has a resistance of 15 ohm and gives full scale deflection for a current of 4 mA.…
8 years ago
Which of the two have same dimensions?
Which of the two have same dimensions? Options (a) Force and strain (b) Force and stress (c) Angular velocity and…
8 years ago
Unit of electrical conductivity is
Unit of electrical conductivity is Options (a) Ω⁻¹ (b) Ω⁻¹ cm (c) Ω⁻¹ cm⁻² (d) Ω⁻¹ cm⁻¹ Correct Answer: Ω⁻¹…
8 years ago
A spring when stretched by 2mm containing energy 4 J. If it is stretched
A spring when stretched by 2mm containing energy 4 J. If it is stretched by 10 mm, its potential energy…
8 years ago
A sound absorber attenuates the sound level by 20 dB. The intensity decreases
A sound absorber attenuates the sound level by 20 dB. The intensity decreases by a factor of Options (a) 100…
8 years ago
If wavelength of a wave is λ=6000 Å, then wave number will be
If wavelength of a wave is λ=6000 Å, then wave number will be Options (a) 166x10³ m⁻¹ (b) 16.6x10⁻¹ m⁻¹…
8 years ago