Question : The wavelength at which the peak of intensity of black body radiation occurs

Option 1: increases with an increase in temperature

Option 2: decreases with an increase in temperature

Option 3: is the same at all temperatures

Option 4: does not follow any pattern as temperature changes

Question : The following graph represents the maximum and minimum temperature recorded every day in a certain week. The day on which the difference between the maximum and minimum temperature was maximum is:

$\small \bullet$ Represents maximum temperature
$\circ$ Represents minimum temperature

Option 1: Wednesday

Option 2: Saturday

Option 3: Sunday

Option 4: Monday

Question : The day-to-day condition of the atmosphere at a place concerning the temperature, humidity, rainfall, wind speed etc. is called _____ at that place.

Option 1: climate

Option 2: weather

Option 3: environment

Option 4: ecology

Question : The lowest temperature at which a substance catches fire is called its ___________.

Option 1: melting point

Option 2: explosion point

Option 3: ignition temperature

Option 4: combustion temperature

Question : The confluence of Bhagirathi and Alaknanda occurs at ________.

Option 1: Vishnuprayag

Option 2: Nandaprayag

Option 3: Devprayag

Option 4: Rudraprayag