Free Printable PHYSICS PRACTICE 1

1.

The distance between two successive trough of a wave is 0.4m. if the frequency of the source is 825Hz, calculate the speed of the wave.

a)

165m/s

b)

330m/s

c)

412.5m/s

d)

825m/s

2.

A pressurized perfume bottle is left on the window pane of a room. What happens to the gas molecules of the perfume on a sunny day? They

a)

expand

b)

collides less often

c)

move more rapidly

d)

contract

3.

Which of the following substances lowers the surface tension of water?

a)

metal

b)

sand

c)

detergent

d)

paper

4.

A uniform meter rule is balanced on a meter rule placed at the 35cm mark by suspending mass of 120g at the 10m mark. Calculate the mass of the meter rule

a)

200g

b)

1000g

c)

800g

d)

400g

5.

When the body is thrown vertically upwards. It’s velocity at the maximum height is

a)

maximum

b)

zero

c)

double its initial value

d)

half it’s initial value

6.

Resonance occurs when one vibrating object causes the second object to vibrate at its own natural

a)

speed

b)

amplitude

c)

frequency

d)

intensity

7.

A body can undergo the following types of motion except

a)

random

b)

rotational

c)

translational

d)

relative

8.

A plane is inclined at angle 0 to the horizontal. It’s velocity ratio is

a)

sin 0

b)

tan 0

c)

1/sin0

d)

1/tan 0

9.

A rainbow is formed when sunlight is incident on water droplets suspended in the air due to

a)

diffraction

b)

refraction

c)

dispersion

d)

interference

10.

A converging lens of focal length 10 cm forms an erect image three times the size of a real object and the image

a)

6.6CM

b)

11.1cm

c)

13.3cm

d)

20.0cm

11.

A nucleon number of an atom is the total number of

a)

electron and neutrons

b)

electron and proton

c)

neutron minus electrons

d)

protons and neutrons

12.

A chemical balance is used to measure

a)

volume

b)

mass

c)

thickness

d)

density

13.

The maximum density of water occurs at a temperature of

a)

0^oc

b)

4^oc

c)

37^oc

d)

273^oc

14.

Thermal energy added or removed from a substance that changes the state of the substance is called

a)

latent heat

b)

heat of reaction

c)

calorimeter

d)

specific heat

15.

Which of the following is a derived unit?

a)

kg

b)

m

c)

k

d)

N

16.

The slope of a straight line velocity line graph represents

a)

uniform acceleration

b)

uniform speed

c)

total distance travelled

d)

work done

17.

A body of mass 1000kg is released from a height of 10m above the ground. Determine the kinetic energy just before it strikes the ground (g=10m/s).

a)

10J

b)

1000J

c)

10000J

d)

100000J

18.

A quantity of hot water at 100c is added to 400g of water at 10c until the temperature of the mixture is 60c . Calculate the mass of the hot water added ( specific heat capacity of water is 4200J/kJ/k

a)

200g

b)

320g

c)

400g

d)

500g

19.

Which of the following is the SI unit of heat capacity?

a)

j/kg

b)

j/kg/k

c)

jkg

d)

j/g/k

20.

Two strings each inclined at angle 30 to the horizontal are used to hold a bucket of water weighing 20N. Calculate the tension in each string (A) 20

a)

20 $\sqrt[]{3}$ N

b)

20 N

c)

10 $\sqrt[]{3}$ N

d)

10 N

PHYSICS PRACTICE 1

Total questions: 20

Worksheet time: 3mins

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