Which of the following physical phenomena can not be described only by the wave theory of electromagnetic radiation...? Mcqs

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Which of the following physical phenomena can not be described only by the wave theory of electromagnetic radiation...?

(A) Diffraction
(B) interference

(C) Photoelectric emission
(D) Polarization

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Thermal energy transfer required per unit mass to increase the temperature by 1°C or 1 K is called...?

(A) Latent heat of Vaporization
(B) Specific heat capacity

(C) Latent heat of fusion
(D) Thermal capacity

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Frog eggs are also called...?

(A) Spawn
(B) Froglet

(C) Tadpoles
(D) Adult

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A piece of matter in pure form is termed as ______...?

(A) Redical
(B) Mixture

(C) Compound
(D) Substance

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_________ is the atmospheric layer that absorbs most of the ultraviolet radiation that Earth receives from the Sun....?

(A) Troposphere
(B) Stratosphere

(C) Mesosphere
(D) Ionosphere

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Surfactants reduce the ______ of water....?

(A) Viscosity
(B) Surface tension

(C) Boiling point
(D) Melting Point

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Sunlight is made of__________colours...?

(A) Seven colours
(B) Five colours

(C) Three colours
(D) Non of these

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Near Earth's surface g = ______...?

(A) 10 ms^-2
(B) 1.6 ms^-1

(C) Both (a) and (b)
(D) None of these

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The transfer of pollen grains from anther of a flower to the stigma of the same or another flower is called...?

(A) Fertilization
(B) Reproduction

(C) Pollination
(D) Photosynthesis

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A bird sitting on a high tension electric wire does not get electrocuted because:...?

(A) Sit has high resistance
(B) the body is earthed

(C) it does not form a closed path for the flow of current
(D) its feet are good insulators

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