A radiation of energy ‘E’ falls normally on a perfectly reflecting surface
A radiation of energy 'E' falls normally on a perfectly reflecting surface. The momentum transferred to the surface is (c=…
7 years ago
Physics
A potentiometer wire has length 4m resistance 8Ω. The resistance that must be connected
A potentiometer wire has length 4m resistance 8Ω. The resistance that must be connected in series with the wire and…
7 years ago
A parallel plate air capacitor of capacitance C is connected to a cell of emf
A parallel plate air capacitor of capacitance C is connected to a cell of emf V and then disconnected from…
7 years ago
A certain metallic surface is illuminated with monochromatic light of wavelength
A certain metallic surface is illuminated with monochromatic light of wavelength λ. The stopping potential for photoelectric current for this…
7 years ago
Light with an energy flux of 25×10⁴ Wm⁻² falls on a perfectly reflecting surface
Light with an energy flux of 25x10⁴ Wm⁻² falls on a perfectly reflecting surface at normal incidence. If the surface…
7 years ago
Two cities are 150 km apart. Electric power is sent from one city to another city
Two cities are 150 km apart. Electric power is sent from one city to another city through copper wires. The…
7 years ago
The mean free path of molecules of a gas,(radius ‘r’) is inversely proportional to
The mean free path of molecules of a gas,(radius 'r') is inversely proportional to Options (a) r³ (b) r² (c)…
7 years ago
Steam at 100⁰C is passed into 20 g of water at 10°C. When water acquires a temperature
Steam at 100⁰C is passed into 20 g of water at 10°C. When water acquires a temperature of 80°C, the…
7 years ago
If force(F), Velocity(V) and time(T) are taken as fundamental units, then the dimensions
If force(F), Velocity(V) and time(T) are taken as fundamental units, then the dimensions of mass are Options (a) FVT⁻¹ (b)…
7 years ago
Two thin dielectric slabs of dielectric constants K₁ and K₂, (K₁ < K₂) are inserted
Two thin dielectric slabs of dielectric constants K₁ and K₂, (K₁ < K₂) are inserted between the plates of a…
7 years ago