Physics
When a ray of light travels normal to the given surface, then the angle of refraction is:
- 180°
- 90°
- 0°
- 45°
Related Questions
Small air bubbles rising up a fish tank appear silvery when viewed from some particular angle is due to the:
- reflection
- refraction
- dispersion
- total internal reflection
Specific latent heat of a substance:
- is directly proportional to the mass
- is directly proportional to the change in the temperature
- depends on the material
- is inversely proportional to the mass
Specific heat capacity of a substance X is 1900 Jkg-1°C-1 means:
- Substance X absorbs 1900 J for 1°C rise in temperature
- 1 kg of substance X absorbs 1900 J heat for 1°C rise in temperature
- 1 kg of substance X absorbs 1900 J heat to increase the temperature
- 1 kg of substance X absorbs 1900 J heat to cool down by 1°C
(a) When does the nucleus of an atom tend to become radioactive?
(b) Name a single pulley in which displacement of load and effort is not the same.
(c) State one advantage of this pulley.