Question
A metal plate with a circular hole at the centre is
heated. What will happen to the area of the hole?Solution
Assuming the disc is uniform and isotropic (the same in different directions), the hole will expand in the same ratio as the metal. It is because the thermal expansion equation applies to all lengths associated with the metal, including the circumference of the hole, since the edge of the hole is made out of metal. And if the circumference of the hole expands, so does the diameter.
 In 2016, which Indian Financial System method was introduced by RBI?
The currency of Switzerland is
Which ministry launched the Humsafar Policy to facilitate better services on National Highways?Â
Match the following Days with their respective days  Â
Match List-I with List-II and choose the correct answer from the codes below:
To be granted Maharatna status, a company's average annual turnover over the last 3 years must exceed ________.
Of which of the following who was the first ever industrialist to get the Bharat Ratna?
In which year “Global gender gap index” was published for the first time?
When was the term "Uttarakhand" used for the first time in Uttar Pradesh administrative records?
Which of the following teams won the ICC Women's T20 World Cup 2020?
