Precision and Range Quiz PDF: Questions and Answers - 131

MCQ 651: Precision of micrometer screw gauge is

1. 0.1 cm
2. 0.01 mm
3. 0.1 mm
4. 0.01 m

MCQ 652: If a car is moving at a speed of 20 m s^-1, and so within 15 s it accelerates uniformly and reaches the speed of 50 m s^-1. So the acceleration rate of the car was

1. 1 m s^-1
2. 2 m s^-1
3. 3 m s^-1
4. 5 m s^-1

MCQ 653: When the medium of electromagnetic waves changes from air to water, their speed

1. increases
2. remains same
3. decreases
4. may increase or decrease

MCQ 654: Vector quantity in four of the following is

1. Speed
2. Weight
3. Mass
4. Time

MCQ 655: Drinking with a straw is a good example of

1. atmospheric pressure
2. ozonic pressure
3. exospheric pressure
4. tropospheric pressure