In total internal reflection, the light travel from
A. Rarer to denser medium and it occurs with no loss of intensity
B. Denser to rarer medium and it occurs with no loss of intensity
C. Rarer to denser medium and it occurs with loss of intensity
D. Denser to rarer medium and it occurs with loss of intensity
Answer: Option B
Solution (By Examveda Team)
For total internal reflection to occur the light must travel from a dense medium to a less dense medium (e.g. glass to air or water to air). As the angle of incidence increases so does the angle of refraction.Which of the following terms is not used in the field of physics?
A. Latent heat
B. Nuclear fusion
C. Refractive index
D. Stock value
Radiocarbon is produced in the atmosphere as a result of
A. Collision between fast neutrons and nitrogen nuclei present in the atmosphere.
B. Action of ultraviolet light from the sun on atmospheric oxygen.
C. Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere.
D. Lightning discharge in atmosphere.
It is easier to roll a stone up a sloping road than to lift it vertical upwards because
A. Work done in rolling is more than in lifting.
B. Work done in lifting the stone is equal to rolling it.
C. Work done in both is same but the rate of doing work is less in rolling.
D. Work done in rolling a stone is less than in lifting it.
The absorption of ink by blotting paper involves:
A. Viscosity of ink
B. Capillary action phenomenon
C. Diffusion of ink through the blotting
D. Siphon action

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