Question An iron rod of length 50 m at a temperature of 60oC is heated to 70oC. Calculate the new length. (a = 0.000012 K-1) Answer 50.006 m Question A platinum resistance thermometer has a resistance of 11.50 ohms at 0 oC and 17.35 ohms at 100 oC. Assuming that the resistance changes uniformly with temperature, what is the temperature when the resistance is 13.50 ohms? Answer 34.19 oC Question Covert 87 oF to Celsius scale. Answer 30.56 oC Question The lengths of the mercury column of a mercury thermometer are 1.26cm and 20.86cm respectively at the standard fixed points. What is the temperature of body, which produces 9.0cm of this mercury column? Answer 45.92 oC Question When the bulb In any liquid in glass thermometer comes in contact with hot object, the liquid inside it Answer expands Question One of the following is not a thermometric property? Answer variation of temoerature Question The clinical thermometer is characterised by having a Answer constriction Question One of the following is not a disadvantage of using alcohol as a thermometric liquid Answer has a low freezing point of -115oC Question Upper fixed point can be defined as Answer the temperature of steam from pure water boiling at normal atmospheric pressure. Question Which of the following properties is not used to measure the temperature of a substatnce? Answer Change in colour with temperature Question Which of the following do not have identical dimensions? Answer Moment of a force and angular momentum Question A 10.0 g bullet is stopped in a block of wood of mass 5.00 kg. The speed of the bullet–plus–wood combination immediately after the collision is 0.600 m/s. What was the original speed of the bullet? Answer 301 m/s Question A rifle is aimed horizontally at a target 30m away. The bullet hits the target 1.9 cm below the aiming point. What is the bullet’s time of flight? Answer 0.062 s Question You throw a ball with a speed of 25.0 m/s at an angle of 40.0? above the horizontal directly toward a wall. The wall is 22.0 m from the release point of the ball. How long does the ball take to reach the wall? Answer 1.15 s Question A baseball is hit such that it travels straight upward after being struck by the bat. A fan observes that it requires 3.00 s for the ball to reach its maximum height. Find its initial velocity. Ignore the effects of air resistance. Answer 29.4 m/s Question The pressure of a gas enclosed in a cylinder by a piston changes from 80 kPa to 200 kPa. If there is no change in temperature and the initial volume was 25 litres, calculate the new volume. Answer 10 litres Question For which of the following thermodynamic processes is the increase in the internal energy of an ideal gas equal to the heat added to the gas? Answer constant volume Question A sample of 1.00 mol of oxygen at 50 oC and 98.6 kPa occupies what volume? Answer 0.0272 squared metre Question The volume of a small piece of metal is 2.000 cm3 at 30 oC and 7.000 cm3 at 70 oC. Determine the cubic expansivity of the metal? Answer 0.0625 per oC Question By which process do gases take the shape of their container? Answer expansion Question An iron rod of length 50 m at a temperature of 60oC is heated to 70oC. Calculate the new length. (a = 0.000012 K-1) Answer 50.006 m Question A platinum resistance thermometer has a resistance of 11.50 ohms at 0 oC and 17.35 ohms at 100 oC. Assuming that the resistance changes uniformly with temperature, what is the temperature when the resistance is 13.50 ohms? Answer 34.19 oC Question Covert 87 oF to Celsius scale. Answer 30.56 oC Question The lengths of the mercury column of a mercury thermometer are 1.26cm and 20.86cm respectively at the standard fixed points. What is the temperature of body, which produces 9.0cm of this mercury column? Answer 45.92 oC Question When the bulb In any liquid in glass thermometer comes in contact with hot object, the liquid inside it Answer expands Question One of the following is not a thermometric property? Answer variation of temoerature Question The clinical thermometer is characterised by having a Answer constriction Question One of the following is not a disadvantage of using alcohol as a thermometric liquid Answer has a low freezing point of -115oC Question Upper fixed point can be defined as Answer the temperature of steam from pure water boiling at normal atmospheric pressure. Question Which of the following properties is not used to measure the temperature of a substatnce? Answer Change in colour with temperature Question The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is as per the principle of Answer resolution of forces Question Effect of a force on a body depends upon Answer all of the above Question Forces are called coplanar when all of them acting on body lie in Answer one plane Question A 2kg box is at the top of a frictionless ramp at an angle of 60o. The top of the ramp is 30m above the ground. The box is sitting still while at the top of the ramp, and is then released. What is the velocity of the box just before it hits the ground? Answer 32.2 m/s Question An object is shot from the ground at 125m/s at an angle of 30o above the horizontal. How far away does the object land? Answer 1350 m Question An object is shot from the ground at 75m/s at an angle of 45° above the horizontal. How high does the object get before beginning its descent? Answer 140 m Question A body moving with uniform acceleration has a velocity of 12.0 cm/s when its x coordinate is 3.00cm. If its x coordinate 2.00 s later is -5.00cm, what is the magnitude of its acceleration? Answer -16.0 cm s-2 Question A football player could routinely kick a ball at a horizontal speed of 160 km/hr. How long did the ball take to reach a point 18.4m away? Answer 0.414 s Question A body moves, from rest with a constant acceleration of 5 m per squared sec. The distance covered in 5 sec is most nearly Answer 62.5 m Question 3-vectors are only properly represented Answer in a 3-dimensional space Question Which of the following do not have identical dimensions? Answer Moment of a force and angular momentum Question A 10.0 g bullet is stopped in a block of wood of mass 5.00 kg. The speed of the bullet–plus–wood combination immediately after the collision is 0.600 m/s. What was the original speed of the bullet? Answer 301 m/s Question A rifle is aimed horizontally at a target 30m away. The bullet hits the target 1.9 cm below the aiming point. What is the bullet’s time of flight? Answer 0.062 s Question You throw a ball with a speed of 25.0 m/s at an angle of 40.0? above the horizontal directly toward a wall. The wall is 22.0 m from the release point of the ball. How long does the ball take to reach the wall? Answer 1.15 s Question A baseball is hit such that it travels straight upward after being struck by the bat. A fan observes that it requires 3.00 s for the ball to reach its maximum height. Find its initial velocity. Ignore the effects of air resistance. Answer 29.4 m/s Question The pressure of a gas enclosed in a cylinder by a piston changes from 80 kPa to 200 kPa. If there is no change in temperature and the initial volume was 25 litres, calculate the new volume. Answer 10 litres Question For which of the following thermodynamic processes is the increase in the internal energy of an ideal gas equal to the heat added to the gas? Answer constant volume Question A sample of 1.00 mol of oxygen at 50 oC and 98.6 kPa occupies what volume? Answer 0.0272 squared metre Question The volume of a small piece of metal is 2.000 cm3 at 30 oC and 7.000 cm3 at 70 oC. Determine the cubic expansivity of the metal? Answer 0.0625 per oC Question By which process do gases take the shape of their container? Answer expansion Question An iron rod of length 50 m at a temperature of 60oC is heated to 70oC. Calculate the new length. (a = 0.000012 K-1) Answer 50.006 m Question A platinum resistance thermometer has a resistance of 11.50 ohms at 0 oC and 17.35 ohms at 100 oC. Assuming that the resistance changes uniformly with temperature, what is the temperature when the resistance is 13.50 ohms? Answer 34.19 oC Question Covert 87 oF to Celsius scale. Answer 30.56 oC Question The lengths of the mercury column of a mercury thermometer are 1.26cm and 20.86cm respectively at the standard fixed points. What is the temperature of body, which produces 9.0cm of this mercury column? Answer 45.92 oC Question When the bulb In any liquid in glass thermometer comes in contact with hot object, the liquid inside it Answer expands Question One of the following is not a thermometric property? Answer variation of temoerature Question The clinical thermometer is characterised by having a Answer constriction Question One of the following is not a disadvantage of using alcohol as a thermometric liquid Answer has a low freezing point of -115oC Question Upper fixed point can be defined as Answer the temperature of steam from pure water boiling at normal atmospheric pressure. Question Which of the following properties is not used to measure the temperature of a substatnce? Answer Change in colour with temperature Question The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is as per the principle of Answer resolution of forces Question Effect of a force on a body depends upon Answer all of the above Question Forces are called coplanar when all of them acting on body lie in Answer one plane Question A 2kg box is at the top of a frictionless ramp at an angle of 60o. The top of the ramp is 30m above the ground. The box is sitting still while at the top of the ramp, and is then released. What is the velocity of the box just before it hits the ground? Answer 32.2 m/s Question An object is shot from the ground at 125m/s at an angle of 30o above the horizontal. How far away does the object land? Answer 1350 m Question An object is shot from the ground at 75m/s at an angle of 45° above the horizontal. How high does the object get before beginning its descent? Answer 140 m Question A body moving with uniform acceleration has a velocity of 12.0 cm/s when its x coordinate is 3.00cm. If its x coordinate 2.00 s later is -5.00cm, what is the magnitude of its acceleration? Answer -16.0 cm s-2 Question A football player could routinely kick a ball at a horizontal speed of 160 km/hr. How long did the ball take to reach a point 18.4m away? Answer 0.414 s Question A body moves, from rest with a constant acceleration of 5 m per squared sec. The distance covered in 5 sec is most nearly Answer 62.5 m Question 3-vectors are only properly represented Answer in a 3-dimensional space
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