GAT Subject Physics MCQs

Percentage uncertainty is absolute uncertainty divided by measured value times 100.
0.2/10.0×100 = 2%.

Percentage error is |48-50|/50×100.
The result is 2/50×100 = 4%.

Move the decimal four places to the right to obtain 7.2.
Therefore the exponent is -4.

Both sides of a valid physical equation must have the same dimensions.
Dimensional analysis can reveal inconsistent formulas.

A scalar has magnitude only.
Speed has no associated direction.

A vector has both magnitude and direction.
Acceleration describes the rate and direction of velocity change.

The common factors of 36 and 48 include 1, 2, 3, 4, 6, and 12.
The greatest of these is 12.

Multiples of 8 are 8, 16, 24, and so on.
The first multiple also divisible by 12 is 24.

A number is divisible by 9 when the sum of its digits is divisible by 9.
For 5,832, the digit sum is 18.

Since 12 × 13 = 156, subtracting gives 157 - 156 = 1.
Thus, the remainder is 1.

Division and multiplication have equal priority and are performed left to right.
So 48 ÷ 6 = 8, and 8 × 3 = 24.

Multiplication is performed before addition.
Thus, 3 × 4 = 12 and 5 + 12 = 17.