Forces and Motion Quiz Questions and Answers PDF - 53

MCQ 261: A wheelbarrow of mass 75 kg accelerates from rest and reaches the speed of 10 m s^-2 in 5 seconds. Its force is

1. 150 N
2. 375 N
3. 750 N
4. 3750 N

MCQ 262: When a meter rule is not pivoted at 50 cm, its weight

1. won't cause a turning effect
2. will be zero
3. won't have magnitude
4. will cause a turning effect

MCQ 263: Sound waves include

1. troughs and crests
2. compressions and crests
3. troughs and rarefactions
4. compressions and rarefactions

MCQ 264: In a laboratory, 200 g of mercury requires 30000 J of energy is used to raise the temperature from 10 °C to 25 °C, the heat capacity of the mercury would be

1. 1000 J K^-1
2. 2000 J K^-1
3. −2000 J K^-1
4. −1000 J K^-1

MCQ 265: Thermometer that can measure rapidly changing temperature is

1. Mercury-in-glass thermometer
2. Alcohol-in-glass thermometer
3. Platinum resistance thermometer
4. Thermocouple thermometer