Question
Refraction of light occurs:

Answer

(A) - Due to change in the speed of light

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A student plots a graph from his reading on the determination of Young modulus of a metal wire but forgets to put the labels. the quantities on X and Y axes may be respectively:
  1. Weight hung and length increased.
  2. Stress applied and length Increased.
  3. Stress applied and strain developed.
  4. Length increased and the weight hung.
​​​​​​​
Semiconductors are generally made up of which substance?
A metal plate gets heated, when cathode rays strike against, it due to (a) Kinetic energy of cathode rays(b) Potential energy of cathode rays(c) Linear velocity of cathode rays(d) Angular velocity of cathode rays
   
   
Suppose the medium in the previous question is water. Select the correct option$(s)$ from the list given in that question.
A current of 2 A passing through conductor produces 80 J of heat in 10 seconds. The resistance of the conductor is(a) 0.5 Ω(b) 2 Ω(c) 4 Ω(d) 20 Ω
       
When two waves with same frequency and constant phase difference interfere,
  1. There is a gain of energy.
  2. There is a loss of energy
  3. The energy is redistributed and the distribution changes with time.
  4. The energy is redistributed and the distribution remains constant in time.
Which of the following are non polar molecules:
Eels are able to generate current with biological cells called electroplaques. The electroplaques in an eel are arranged in $100$ rows, each row stretching horizontally along the body of the fish containing $5000$ electroplaques. The arrangement is suggestively shown below. Each electroplaques has an emf of $0.15 V$ and internal resistance of $0.25 W$

The water surrounding the eel completes a circuit between the head and its tail. If the water surrounding it has a resistance of $500 W,$ the current an eel can produce in water is about
If n drops, each of capacitance $C,$ coalesce to form a single big drop, then the ratio of the energy stored in the big drop to that in each small drop will be
In a P-type semiconductor, germanium is doped with(a) Boron (b) Gallium(c) Aluminium(d) All of these