Choose the odd one out in the following:- displacement, velocity,speed,average speed.
displacement
velocity
speed
average speed
10. Which device is used for measuring weight?
beam balance
physical balance
spring balance
all of these
11. Choose odd one out in the following:- force, weight, acceleration,energy.
force
weight
acceleration
energy
Required
12. Brownian motion is the example of ______ motion.
complex
rotatory
random
all of this
Required
13. SI unit of frequency is_________.
hartz
Pascal
Kelvin
metre
Required
14. The following is a characteristic property of a substance.
volume
wait
density
none of these
Required
15. Choose odd one out in the following:- hydrometer,lactometer ,density bottle, physical balance.
hydrometer
lactometer
density bottle
physical balance
Required
16. When a substance is heated its density __________.
increases
decreases
remains same
first increases then decreases
Required
17. Mass is measured by using spring balance.
True
False
Required
18. Find the mass of 2 litres of alcohol in kg when density of alcohol is 0.8 gram per centimetre cube.
16 kg
1.6 kg
1600 kg
0.16 kg
Required
19. The space occupied by an object is called its_______.
area
capacity
volume
speed
Required
20. The density of gold is______kg/cubic metre.
19300
27400
8000
13600
Required
21. Name the device which is designed to test the purity of milk.
hydrometer
manometer
barometer
lactometer
Required
22. Equal volumes of iron and Aluminium have _______masses.
same
equal
different
none of these
Required
23. Rotation of earth is a periodic motion.
True
False
Required
24. All oscillatory motions are________.
periodic
non periodic
uniform
all of these
Required
25. Calculate the weight of a body of mass 13 kg and g=10m/square second.
13 Newton
130 Newton
1300 Newton
13000 Newton
Required
26. A flying mosquito is an example of_____.
random motion only
combination of motion only
both random in combination motion
linear motion only
Required
27. The number of vibrations or oscillations made by a pendulum in one second is called________.
amplitude
frequency
time period
oscillation
Required
28. Which of the following terms are related to each other.
scalar and vector
distance and displacement
speed and velocity
rest and motion
Required
29. Unit of force in CGS system is_______.
joule
dyne
Pascal
Celsius
Required
30. A hammer of mass 2 kg is raised to a height of 3m.What will be its potential energy?
588 J
5.88 J
58.8 J
580 J
Required
31. Water cycle is caused due ____ energy.
air
water
solar
thermal
Required
32. A firecracker converts chemical energy into sound ,light and heat energy.
sound energy
light energy
heat energy
all of these
Required
33. Name the device that change sound energy into electrical energy.
mobile
loudspeaker
gramophone
microphone
Required
34. Name a device that change mechanical energy into electrical energy
dynamo
solar cooker
geyser
all of these
Required
35. Name a device that change heat energy into electrical energy.
thermoelectric power stations
room heater
electric bell
stereo system
Required
36. Which of the following device change chemical energy into mechanical energy?
car
bus
truck
all of these
Required
37. Which of the following are fossil fuels?
coal
petroleum
both of these
none of these
Required
38. Which is the example of renewable source of energy?
petroleum
kerosene
biomass
LPG
Required
39. Energy chain consists of______.
solar energy
chemical energy
heat energy
all of these
Required
40. Potential energy of a person is minimum when-
he is standing
he is sitting on chair
he is sitting on the ground
he is lying on the ground
Required
Answers
Answered by
0
Answer:
speed
Explanation:
this is the correct answer
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