An object is placed 20cm from a lens. If an image is formed on a…
An object is placed 20cm from a lens. If an image is formed on a screen 260cm away…
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A piece of cloth appears green in sunlight. When held in red light, it will…
A piece of cloth appears green in sunlight. When held in red light, it will appear A. green…
An incident ray is reflected normally by a plane mirror onto a screen where it…
An incident ray is reflected normally by a plane mirror onto a screen where it forms a bright…
Convex spherical mirrors are preferred to plane mirrors as driving mirrors because
Convex spherical mirrors are preferred to plane mirrors as driving mirrors because A. the image produce is upright…
Which of the following physical qualities affects the saturated vapour pressure of a liquid ?
Which of the following physical qualities affects the saturated vapour pressure of a liquid ? A. temperature B.…
Humidity is used to describe the amount of
Humidity is used to describe the amount of A. air in water vapour B. cloud available in the…
Surface waves travelling in deep water at 15ms-1 are incident at a shallow water boundary….
Surface waves travelling in deep water at 15ms-1 are incident at a shallow water boundary. If the angles…
Surface waves travelling in deep water at 15ms-1 are incident at a shallow water boundary….
Surface waves travelling in deep water at 15ms-1 are incident at a shallow water boundary. If the angles…
The volume of an ideal gas at a pressure of 77cmHg and temperature 60oC is…
The volume of an ideal gas at a pressure of 77cmHg and temperature 60oC is 24cm3. If the…
The amount of heat given out or absorbed when a substance changes its state at…
The amount of heat given out or absorbed when a substance changes its state at a constant temperature…