Let the ten’s digit be x. Then, unit digit = 7- x . No.= 10x + (7-x ) = 9x + 7 No. obtained by reversing the digits = 10(7- x ) + x = 70-9x (9x + 7) - 9 = 70- 9x , or, 9x + 9x = 70 - 7 + 9, or, 18x = 72 or x = 4, so ten’s digit = 4 and unit digit = 3 Hence, the required number = 43.
Mercalli scale is the instrument used for measuring the intensity of ___________.
If an object is pulled by holding it from both ends, then the force applied on it is called _______.
Which of the following statements is true when we see 'rainbow'?
Heat stored in water vapour is –
______ is an important metal to form amalgam.
A ship will submerge when it displaces water equal to its
Which material has the lowest refractive index?
The motion of a freely falling body is an example of ______________ accelerated motion.
Which type of mirror is utilized in solar furnaces to focus sunlight and generate heat?
What is the SI unit of Luminous Intensity?
