General physics- Knowledge test

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General physics- Knowledge test

Question 46 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Rainbow is produced when sunlight fall on drops of rain. Which of the following physical phenomena are responsible for this?
  1. Diffusion
  2. Refraction
  3. Internal reflection
A
I, II and III
B
I and II
C
II and III
D
I and III
Question 47 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Point A is at a lower electrical potential than point B. An electron between them on the line joining them will
A
move towards A
B
move towards B
C
move at right angles to the line joining A and B
D
remain at rest
Question 48 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
On a stationary sail boat, air is blown from a fan attached to the boat. The boat
A
moves in opposite direction in which the air is blown
B
does not move
C
moves in the same direction in which air blows
D
spins around
Question 49 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Of the following natural phenomena, tell which one known in Sanskrit as 'deer's thirst'?
A
Rainbow
B
Earthshine
C
Halo
D
Mirage
Question 50 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Identify the vector quantity from the following
A
Heat
B
Angular momentum
C
Time
D
Work
There are 50 questions to complete.