Q. After decimal point, number is less than 5 which is to be neglected,then retained number gets increased get decreased remains unchanged may decreased Answer: remains unchanged
After decimal point, number is less than 5 which is to be neglected,then retained number Read More »
Q. Planck’s constant has the dimensions of : force energy linear momentum angular momentum Answer: angular momentum
Q. Which of the following is not the unit of time solar day parallactic second leap year lunar month Answer: parallactic second
Q. A dimensionless quantity has no unit must have a unit cannot exist May have a unit Answer: May have a unit
Q. Find the option with 3 significant figures. 0.0268 2.068 2.608 26.08 Answer: 0.0268
Q. Which of the following is not the unit of energy? watt-hour electron-volt N × m kg × m/sec Answer: kg × m/sec
Which of the following is not the unit of energy? Read More »
Q. In an experiment the angles are required to be measured using an instrument. 29 divisions of the main scale exactly coincide with the 30 divisions of the vernier scale. If the smallest division of the main scale is half-a-degree (= 0.5°), then the least count of the instrument is One minute Half minute One
Q. What is the number of significant figures in 0.310×10 ? 6 2 4 3 Answer: 3
What is the number of significant figures in 0.310×10 ? Read More »
Q. In case of measurement of ‘g’, if error in measurement of length of pendulum is 2%, the percentage error in time period is1 %. The maximum error in measurement of g is 1 % 2 % 4 % No error Answer: 4 %
Q. The number of significant figures in the distance of one light year, 9.4605 × 10 m is thirty five four three Answer: five
The number of significant figures in the distance of one light year, 9.4605 × 10 m is Read More »
