Question

The number, 0.00001465 can be correctly expressed in scientific notation as ( NCERT Pg. 11)
(1) 146.5 x 10^-6
(2) 146.5 x 10^-3
(3) 1.465 x 10^-5
(4) 1.465 x 10^-4​

Answer 1

Answer:

(3) 1.465 x 10^-5

is your correct answer

Answer 2

The correct answer is option (3)

$1 .456 \times {10}^{ - 5}$

GIVEN

Mathematical term = 0.00001465

TO FIND

Correct scientific notation of the given term.

SOLUTION

We can simply solve the above problem as follows;

To convert a decimal number into scientific notation,

We need to move the decimal point to the first non-zero digit.

Therefore,

In the given number we need to move the decimal after 1.

Since the decimal is moved 5 places to the write the exponent will be negative.

Therefore,

$0.00001456 = 1.456 × {10}^{ - 5}$

Hence, the correct answer is option (3)

$1 .456 \times {10}^{ - 5}$

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