From the diagram, the correct equation for the refractive index n of the medium is
From the diagram, the correct equation for the refractive index n of the medium is A. n =…
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A ray of light travels from air to water. The refeactive index of water is…
A ray of light travels from air to water. The refeactive index of water is given by the…
The ability of a wave to spread around corners is called
The ability of a wave to spread around corners is called A. polarisation B. dispersion C. diffraction D.…
The following devices use plane mirrors in their operations, except
The following devices use plane mirrors in their operations, except A. periscope B. sextant C. kaleidoscope D. binoculars…
When an object is placed at the principal focus of a concave mirror, the location…
When an object is placed at the principal focus of a concave mirror, the location of the image…
Dew point is not affected by
Dew point is not affected by A. temperature B. wind C. the amount of water vapour in the…
A certain wave has a speed of 20ms-1. If the frequency of the wave is…
A certain wave has a speed of 20ms-1. If the frequency of the wave is 0.25Hz, calculate the…
An electric drill rated 400W is used to drill a hole in copper of mass…
An electric drill rated 400W is used to drill a hole in copper of mass 400g in 20s.…
A solid of mass 0.5kg initially at 50oC melts at 60oC. Calculate the quantity of…
A solid of mass 0.5kg initially at 50oC melts at 60oC. Calculate the quantity of heat required to…
Specific heat capacity 36.4 Jkg-1 K-1 of a body means that when 36.4J of heat…
Specific heat capacity 36.4 Jkg-1 K-1 of a body means that when 36.4J of heat energy is supplied…