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Consider the following statements: 1. A widely used musical scale called diatonic scale has seven frequencies. 2. The frequency of the note Sā is 256 Hz and that of Nī is 512 Hz.
(a)
1 only
(b)
2 only
(c)
Both 1 and 2
(d)
Neither 1 nor 2
(A)
Which one of the following laser types is used in a laser printer?
Dye laser
Gas laser
Semiconductor laser
Excimer laser
(C)
Assertion (A): Radio waves bend in a magnetic field. Reason (R): Radio waves are electromagnetic in nature.
Both A and R are individually true and R is the correct explanation of A
Both A and R are individually true and R is not the correct explanation of A
A is true but R is false
A is false but R is true