Which two of the following five physical parameters have the same dimensions?
Which two of the following five physical parameters have the same dimensions? 1. energy density 2. refractive index 3. dielectric…
8 years ago
Questions
The unit of surface tension is
The unit of surface tension is Options (a) N/cm (b) N/cm² (c) N/cm³ (d) None of these Correct Answer: N/cmExplanation:No…
8 years ago
The potential energy of a long spring when stretched by 2 cm is U.
The potential energy of a long spring when stretched by 2 cm is U. If the spring is stretched by…
8 years ago
A stationary particle explodes into two particles of masses m₁ and m₂ which move
A stationary particle explodes into two particles of masses m₁ and m₂ which move in opposite directions with velocities v₁…
8 years ago
A uniform rope of length 12 m and mass 6 kg hangs vertically from a rigid support.
A uniform rope of length 12 m and mass 6 kg hangs vertically from a rigid support. A block of…
8 years ago
The time of reverberation of a room A is one second. What will be the time (in seconds)
The time of reverberation of a room A is one second. What will be the time (in seconds) of reverbation…
8 years ago
A plane polarised light is incident normally on a tourmaline plate. Its E vector make
A plane polarised light is incident normally on a tourmaline plate. Its E vector make an angle of 60⁰ with…
8 years ago
The interferance pattern is obtained with two coherent light sources of intensity
The interferance pattern is obtained with two coherent light sources of intensity ratio n. In the interference pattern, the ratio…
8 years ago
If sink is at a temperature of -39⁰C and source at 0⁰C, then efficiency will be
If sink is at a temperature of -39⁰C and source at 0⁰C, then efficiency will be Options (a) 14.20% (b)…
8 years ago
If ∆Q>0 when heat flows into a system, ∆W>0 when work is done on the system
If ∆Q>0 when heat flows into a system, ∆W>0 when work is done on the system, then the increase in…
8 years ago