A brief information about three substances is given :
X : Transparent, smooth to touch and insulator.
Y : Yellow in colour, good conductor of heat and electricity, lustrous.
Z : Man made material, an insulator, used to make switches and handles of cooking utensils.
X, Y and Z could be respectively
A Water, copper, aluminium
B Glass, gold, plastic
C Paper, aluminium, copper
D Silver, gold, copper.
Stand facing the rising Sun in the morning. In front of you lies the _______ and behind you is, the ________.
Between them to the right side is _______ and to left side is ________.
A East, West, North, South
B East, West, South, North
C West, East, South, North
D North, South, East, West
w on top N in the right E below and Sto the left
You are given four sources of light each one providing a light of a single colour - red, blue, green and yellow. Suppose the angle of refraction for a beam of yellow light corresponding to a particular angle of incidence at the interface of two media is 90°. Which of the following statements is correct, if the source of yellow light is replaced with that of other lights without changing the angle of incidence?
A The beam of red light would undergo total internal reflection.
B The beam of red light would bend towards normal while it gets refracted through the second medium.
C The beam of blue light would undergo total internal reflection.
D The beam of green light would bend away from the normal as it gets refracted through the second medium.
A ring is made of a wire having a resistance 12 Ω. The points P and Q as shown in figure, at which a current carrying conductor should be connected, so that the resistance of the sub circuit between these points is equal to divide the ring in lengths l1 and l2. Then
In the diagram given below, the arrows (---->) and (→) represent the transportation of P and Q from one part of a plant to another. X and Y represent different parts of the plant.
Which one of the following correctly represents P and Q; and X and Y?