Question
Which property of a wave is related to its
frequency?Solution
The energy of a wave is directly proportional to its frequency. The higher the frequency, the higher the energy. This is true for electromagnetic waves such as light. Energy E is given by the formula E = h × f, where h is Planck's constant and f is frequency.
If ‘+’ means ‘-’, ‘×’ means ‘+’, ‘-’ means ‘÷’ and ‘÷’ means ‘×’, then what is the value of the following expression...
In how many different ways can the letters of the word 'COMPUTER' be arranged in such a way that the vowels always come together?
If '+' means '-', '×' means '+', '-' means '÷', and '÷' means '×', then what is the value of the following expression?
75 ÷ 5 + 312 × 18 - ...
In a certain code language, '+' represents ' X ', ' - ' represents '+', '÷' represents '-' and ' X ' represents '÷'. Find out the answer to the follow...
If × stands for 'addition', ÷ stands for 'subtraction', + stands for 'multiplication' and - stands for 'division', then 31 × 18 ÷ 20 - 5 + 9 = ?
If ‘-’ stands for ‘division’, ‘+’ for ‘multiplication’, ‘÷’ for ‘subtraction&rs...
If '@' denotes 'addition', '#' denotes 'subtraction', '$' denotes 'multiplication' and '%' denotes 'division', then, what will be the value of the follo...
If ‘–‘ means ‘addition’, ‘+’ means ‘subtraction’, ‘÷ ‘ means ‘multiplicat...
Which two signs should be interchanged to make the following equation correct?
36 – 36 ÷ 9 + 8 × 4 = 8
Which among the given operators should replace the “%” (in the same order) in the given expression below:
5 % 10 % 5 % 36 % 15 % 6
