1. Mercury thermometers can be used to measure temperature up to
(a) 260°C
(b) 100°C
(c) 360°C
(d) 500°C
2. The temperature of a gas is measured with a
(a) platinum resistance thermometer
(b) pyrometer
(c) gas thermometer
(d) vapour pressure thermometer
3. The temperature of the sun is measured with
(a) platinum thermometer
(b) pyrometer
(c) gas thermometer
(d) vapour pressure
thermometer
4. Fahrenheit scale divides two fixed points into
(a) 180 parts
(b) 212 parts
(c) 100 parts
(d) 32 parts
5. SI unit of heat is
(a) Calorie
(b) Joule
(c) Kelvin
(d) None of these
6. When an object is heated, the molecules of that object
(a) began to move faster
(b) lose energy
(c) become heavier
(d) become lighter
7. Which of the following substances has greatest specific heat?
(a) Iron
(b) Gold
(c) Copper
(d) Mercury
8. One Joule is approximately equal to
(a) 0.28 cal
(b) 0.32 cal
(c) 0.24 cal
(d) 4.2 cal
9. Glaciers always melt at the ………… first.
(a) top surface
(b) sides
(c) bottom
(d) middle surface
10. Calorimeters are generally made of
(a) copper
(b) brass
(c) aluminum
(d) zinc
11. One fermimete is equal to
(a) 10^-9 m
(b) 10^-15 m
(c) 10^-18 m
(d) 10^-12 m
12. SI unit of luminious intensity is
(a) Lumen
(b) Lux
(c) Candela
(d) Watt
13. Masses of stars and galaxies are usually expressed in terms
of
(a) Neutron mass
(b) Earth’s mass
(c) Solar mass
(d) Lunar mass
14. What is the SI unit of Young’s modulus of elasticity
(a) Dyne/cm
(b) Newton/m
(c) Newton/m²
(d) m²/s
15. When the milk is churned vigorously the cream from it is
separated out due to
(a) Frictional force
(b) Centrifugal force
(c) Centripetal force
(d) Gravitational force
16. One astronomical unit is the average distance between
(a) Earth and the sun
(b) Earth and the moon
(c) Jupiter and the sun
(d) Pluto and the sun
17. Which of the following physical quantities have the same
dimensions?
(a) Kinetic energy, velocity
(b) Work and torque
(c) Potential energy,
linear momentum
(d) Angular momentum and work
18. Maxwell is the unit of
(a) Intensity of magnetization
(b) Permeability
(c) Magnetic flux
(d) Magnetic susceptibility
19. Unit of solid angle is
(a) Degree
(b) Radian
(c) Steradian
(d) Radian-second
20. Which of the following is not a vector quantity?
(a) Electric current
(b) Electric field
(c) Acceleration
(d) Linear momentum