A brass ball is tied to a thin wire and swung so as to move uniformly in a horizontal circle. Which of the following statements in this regard is/are true?
Select the correct answer using the code given below:
1 only
1 and 3
1, 2 and 4
2 and 4 only
D.
2 and 4 only
Two long wires each carrying a d.c. current in the same direction. are placed close to each other. Which one of the following statements is correct?
The wires will attract each other
The wires will repel each other
There will be no force between the wires
There will be a force between the wires only at the moment when the current is switched ON or OFF
Which one of the following sea routes is the shortest from point to point?
Kolkata to Yangoon
Kolkata to Chennai
Chennai to Port Blair
Mumbai to Colombo
The absolute zero, i.e., temperature below which is not achievable, is about:
0°C
-273 K
-273°C
-300°C
Lightning conductors are used to protect building from lightning strikes. Which of the following statements is/are true about lightning conductors?
Select the correct answer using the code given below:
1 and 2
3 and 4 only
1, 3 and 4
4 only
Match List-I with List-II
List I (Manufacturing site)
List II (Industry)
(a) - 1, (b) - 4, (c) - 3, (d) - 2
(a) - 2, (b) - 3, (c) - 4, (d) - 1
(a) - 2, (b) - 4, (c) - 3, (d) - 1
(a) - 1, (b) - 3, (c) - 4, (d) - 2