Tugas akhir semester 2

Fisika 2011/2012

Ramadhani Sardiman X.2

1. The similiar things between camera and eye is...

a. Camera work with similiar principle with the eye

b. The quality of image between those

c. It creates a great images than the objects

d. To capture the image

e. It’s not same between camera and eye

2. The right statement of hyperopia is...

a. Is a condition when a person cannot clearly see near objects

b. Is a condition when a person cannot clearly see distant objects

c. Is a condition when a person can clearly see near objects

d. Is a condition when a person can clearly see distant objects

e. Is a condition when a person clearly see distant objects

3. An object is placed at 5 cm in front of a magnifying lens with 20 cm focal lenght.

Determine the resulting magnification is...?

a. 1,34 times

b. 1,43 times

c. 1,50 times

d. 1,5 times

e. 1,6 times

4. A microscope has an objective lens with 6 cm focal lenght and an eyepiece with 1 cm

focal lenght. If the distance between the two lenses or the microscope lenght is d = 23 cm,

calculate the image magnification for non accommodating eyes is...

a. 66,25 times

b. 66,75 times

c. 65,75 times

d. 65,25 times

e. 66,45 times

5. The formula of terrestrial telescope is...

a. M = Fob : Fol

b. D = Fob + 4Fp + Fok’

c. M = Fob : Fok

d. D = Fok +10Fp +Fok’

e. D = Fob + Fok

6. If a temperature of X is 90° until 30°,

And temperature of C is 100° until 0°

What is the value of °C , if °X = 6° .....

a. -20°C

b. 100°C

c. 40°C

d. -40°C

e. 55°C

7. If know L0 = 100 cm, t0 = 20°C, L1 = 100,15 cm, c = / °C

The value of t1 is...

a. 175°C

b. 180 °C

c. 170 °C

d. 107 °C

e. 108°C

8.

9. The meaning of The Black’s Principle is...

a. The amount of the heat released with higher temperature is equal to the amount of

heat absorbed by the substance with lower temperature.

b. The amount of the heat released with lower temperature is equal to the amount of

heat absorbed by the substance with higher temperature.

c. The amount of the heat absorbed with higher temperature is equal to the amount

of heat released by the substance with lower temperature.

d. The amount of the heat with higher temperature isn’t equal to the amount of heat

by the substance with lower temperature.

e. The amount of the heat released with higher temperature isn’t equal to the amount

of heat absorbed by the substance with lower temperature.

10.

Two metal bars with equal size are connected each other as depicted in the figure. The

free end of P is at 800C, while the free end of Q is at 10

0C. If the coeficient of thermal

conductivity of P is twice that of Q, the temperature of the junction is .....

a. 45.60C

b. 500C

c. 56.70C

d. 600C

e. 650C

11. Heat transfer via radiation is ....

a.

b.

c.

d.

e.

12. A magnitude of 0.25 A flows in 30 minutes. What is the charge of the flowing current?

a. 0.1 A

b. 0.2 A

c. 0.25 A

d. 1 A

e. 2 A

13. 1) The lenght of wire(L)

2) The area of longitudinal section wire (A)

3) The species of wire

4) The colour of wire

Which one is the effect of resistance .....

a. 1, 2 and 4

b. 1, 2 and 3

c. 1, 3 and 4

d. 2, 3 and 4

e. 1, 2 and 5

14. The formula of scala’s read at Amperemeters or voltmeters is...

a. The electric current = scales of pointing x measure limit.

scales maximum

b. The electric current = scales of stub x measure limit.

scales maximum

c. The electric current = scales measure x measure limit.

scales maximum

d. The electric current = scales of pointing by ruse x measure limit.

scales maximum

e. The electric current = scales of pointing by tools x measure limit.

scales maximum

15.

16.

If know R1 = 20 Ω, R2 = 15 Ω, and = 9 cm, how many ?

a. 6 cm

b. 8 cm

c. 10 cm

d. 11 cm

e. 12 cm

17. An air conditioner is used for 16 hours each day with a powerof 1,300 W. Calculate the

energy consumed by the equipment (in kWh) in a month (30 days) is...

a. 642 kWh

b. 634 kWh

c. 462 kWh

d. 426 kWh

e. 624 kWh

18.

Determine the values of electric current passing through R2!

a. 4.8 A

b. 5.0 A

c. 8.0 A

d. 10.5 A

e. 15.0 A

19. - Radio wave

- Microwave

- Infrared ray

- Visible Light

- Ultraviolet ray

- X-ray

- Gamma ray

Which one is have the biggest frequency...

a. X-ray , ultraviolet ray, microwave, infrared ray, visible light, gamma ray, radio wave

b. Gamma ray, x-ray, ultraviolet ray, visible light, infrared ray, microwave, radio wave

c. Radio wave, microwave, infrared ray, visible light, ultraviolet ray, x-ray, gamma ray

d. Infrared ray, radio wave, microwave, visible light, gamma ray, x-ray, ultraviolet ray

e. Ultraviolet ray, gamma ray, x-ray, visible light, infrared ray, radio wave, microwave

20. The function or benefit of electromagnetic wave is, except..

a. In radio broadcasting and television broadcasting

b. Can be used in decoration lamps with certain colors

c. Use in radar and remote sensing systems

d. Used in cooking utensils

e. Can’t use to detect objects based on their heat and image the objects in the dark.

ESSAY :

1. A star telescope has objective focal lens lenght 2,4 m and eyepiece focal lens lenght 6

cm for seeing observes a thing without accomodation. How much the magnifying of

the star telescope ?

Answer :

Not accomodating eyes :

Ma = Fob : Fok

= 240 : 6

= 40 times

2. A vessel has the volume 2 litre at temperature 50°C. If vessels have the cooficient of

linear expansion 2 x / °C. Determine the volume of the vessel at temperature

75°C is..

Answer :

We have ᵞ = 3α = 6 x / °C

At = 75°C - 50°C = 25°C

V0 = 2 litre

And so,

Vt = V0 (1 + ᵞ At)

Vt = 2 (1 + 0,00006 x 25)

Vt = 2 (1 + 0,0015)

So, we get Vt = 2,003 Litre

3.

4. The electromagnetic wave is start from the biggest frequency one is consisting are ?

- Gamma ray

- X-ray

- Ultraviolet Ray

- Visible light

- Infrared ray

- Microwave

- Radio wave

Key :

1. A

2. A

3. A

4. B

5. C

6. D

7. C

8. B

9. A

10. C

11. A

12. C

13. B

14. D

15.

16. E

17. E

18. A

19. B

20. E