WorksheetsSc Physics 1.4
Total questions: 20
Worksheet time: 10mins
P and Q are two different pendulums.
Which statement is correct?
P will swing faster as it has a larger mass.
P will swing faster as it is a longer pendulum.
Q will swing faster as it has a smaller mass.
Q will swing faster as it is a shorter pendulum.
The diagram below shows part of a micrometer screw gauge.
What is the reading shown?
2.48 mm
2.98 mm
5.48 mm
5.98 mm
Which of the following choices show the correct information?
scalar vector
mass power
mass pressure
time gravitational field strength
velocity temperature
The distance-time graph of a car is as shown below. Which graph correctly shows the speed-time graph of the car?
The diagrams below show that object X floats in liquid R but sinks in liquid S.
Liquid R is as dense as liquid S.
Liquid R is denser than liquid S.
Liquid R is less dense than liquid S.
Object X is denser than liquid R.
A hole is drilled in a tile. The diagram below shows the tile hanging freely on a nail. Where is the centre of gravity of the tile?
A
B
C
D
A uniform trapdoor is hinged along one side and, when closed, is supported on the other side by a ledge as shown in the diagram.
When the trapdoor is closed, the ledge exerts an upward force of 25 N on the trapdoor. The gravitational field strength is 10 N / kg.
What is the mass of the trapdoor?
2.5 kg
5.0 kg
25 kg
50 kg
An elephant weighing 20 kN stands on the ground. Each of its four feet has an area of 200 cm2 in contact with the ground.
What is the average pressure exerted on the ground by each foot?
0.1 N/cm2
20 N/cm2
25 N/cm2
100 N/cm2
A man of weight 650 N runs up a flight of stairs 20 m high in 50 seconds.
What is the power developed by the man? (Take g to be 10 N/kg.)
26 W
260 W
6.5 x 104 W
6.5 x 105 W
When water boils, the water particles
break up into smaller particles.
expand.
gain thermal energy.
increase in number.
According to the kinetic model of matter, a solid has a fixed shape and volume because the particles are
closely packed and held together by strong attractive forces between the particles.
closely packed and vibrate in the same manner.
randomly arranged and move about freely.
regularly arranged and move about freely.
Four different coloured closed containers contain equal amount of ice cubes. The containers are made of the same material.
In which container will the ice take the shortest time to melt?
The diagram below shows a metal saucepan containing water and placed on a hot plate. After some time, the air at point X becomes hot.
What are the main ways by which heat travels from the hot plate through the base of the metal saucepan, through the water and through the air to X?
A
B
C
D
The diagram shows the path of a light ray passing from medium P to air.
What is the refractive index of the medium P?
0.68
0.82
1.46
1.75
The diagram below shows a water wave in a ripple tank. What does P and Q represent?
P Q
amplitude wavelength
crest period
frequency crest
wavelength amplitude
The diagram below shows a plane mirror placed at distance of 400 cm in front of a patient.
If the optician’s test card is fixed at 70 cm behind the eyes of the patient, what is the distance from the man to the image of the card?
470 cm
800 cm
870 cm
940 cm
An object is placed 30 cm from a converging lens, with a focal length of 20 cm, and a real and magnified image is formed. The object is now moved so that it is 25 cm from the lens.
Which statement is correct? B
The new image is bigger and its distance from the lens is greater than 30 cm.
The new image is bigger and its distance from the lens is less than 30 cm.
The new image is smaller and its distance from the lens is greater than 30 cm.
The new image is smaller and its distance from the lens is less than 30 cm.
P, Q and R are charged balls hung on threads as shown in the diagram below.
If P is negatively charged, what are the charges on Q and R?
Q R
negative negative
negative positive
positive negative
positive positive
A driver parks his car but accidentally leaves the headlights on. The 12 V car battery has 3.2 x 105 C of stored charge and the operational current of the headlights is 7.5 A.
How long would it take for the battery to lose its charge?
3.0 x 102 s
4.3 x 104 s
2.4 x 106 s
3.5 x 108 s
The same cell is used in each of the circuits shown in the diagram below.
The current is the same in each case.
What is the resistance R?
1.5 ohm
5.0 ohm
6.0 ohm
7.0 ohm
