Instrument used for measuring the density or relative density of liquids is known as
Hydrometer is a direct reading instrument used for measuring the density or relative density of liquids.
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Potential energy is energy possessed by an object due to its
Potential energy is defined as the energy possessed by an object on account of its position. Potential energy Potential energy,... View Article
In concave lens the light ray ___________ after passing through it.
It is the property of concave lens that the light rays diverge after passing through it. It is because of... View Article
The direction of buoyant force is always
The buoyant force due to a liquid acts vertically upward.
Which of these is not a valid assumption of kinetic theory of matter?
A) The intermolecular force increases with decrease in intermolecular space between molecules. B) The temperature of the matter is dependent on... View Article
A point on the principle axis of a lens through which light passes undeviated is called
Optical centre is the point on the principal axis of a lens through which light passes undeviated.
A simple magnifying glass consists of:
A simple magnifying glass consists of convex lens of small focal length.
If the density of an object is greater than the density of liquid, the object will
Object sinks in a liquid if its density is greater than the density of liquid.
A prism splits a beam of white light into seven colours because different colours have different
Prism splits a beam of white light into seven colours because different colours have different speeds due to different wavelengths.
Pencil immersed partly in water appears to be bent due to
The above effect is due to bending of light from its original path when it travels from one medium to... View Article
The seven coloured lights of the spectrum can be recombined when two prisms are placed in
Re-combination of seven colours is done with the help of two inverted prisms.
If the refractive index of two media are equal, then
If the refractive indices of two media are equal, then light ray is not refracted and the interface between two... View Article
The splitting of white light in to its component colours is called
The splitting of white light in to its component colours is called dispersion.
Who discovered that the clouds are electrically charged?
Benjamin Franklin discovered that the clouds are electrically charged. Around June 1752, Franklin conducted his famous kite experiment. By conducting... View Article
A white light is a mixture of
A white light is a mixture of seven colours, Red, Orange, Yellow, Green, Blue, Indigo, and Violet.
What is the electrical discharge from clouds to building or a tree is called?
Answer: The electrical discharge from clouds to building or a tree is called a lightning streak. Lightning is caused due... View Article
At the time of rainbow, the raindrops in atmosphere acts like
At the time of rainbow, the raindrops in the atmosphere acts like many small prisms.
Fill in the Blank: When charges do not flow, the electricity is called _____.
Answer: When charges do not flow, the electricity is called static electricity. Static electricity When charges do not flow, the... View Article
A rainbow is produced by the
A rainbow is produced by the dispersion of sunlight by the raindrops in the atmosphere. Rainbow is formed when the... View Article
Valence electrons are:
Electrons present in the outermost orbit are known as valence electrons.
