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Worksheetspreparation of science exam-G9
Total questions: 15
Worksheet time: 18mins
What is a punctum remotum?
A longest distance that sufferer can see clearly
A shortest distance that sufferer can see clearly
Distance between lens and an object
Distance between lens and an image
He suffers from myopia and he uses a glass to see an object clearly. Where is location of an image?
at Sn
at an unlimited distance
at focus of lens
at punctum remotum
When a grandfather who suffers hypermetropia uses glass, where is a location of an object and location of an image?
An object is at Sn and an image is at punctum remotum
An object is at Sn and an image is at punctum proximum
An object is at focus and image is at punctum remotum
An object is at focus and image is at punctum proximum
Where is location of an object in usage of the magnifying glass in accommodation-eyes?
At focus
in front of focus
between focus and 2 focus
at infinite
Where is location of an object in usage of the magnifying glass in non-accommodation-eyes?
at focus
in front of focus
between focus and 2 focus
at infinite
What is a magnification of the microscope in usage of the accommodation-eyes?
M = S'ob/Sob x Sn/foc
M = S'ob/Sob x (Sn/foc) + 1
M = Sob/S’ob x Sn/foc
M = Sob/S’ob x (Sn/foc) + 1
In usage of microscope, an object is located …….
In front of focus of an objective lens
At focus of an objective lens
Between focus and 2 focus of an objective lens
Behind 2f of an objective lens
In usage of microscope with non-accommodation-eyes, the distance between 2 lens is …..
S’ob + Soc
S’ob + Foc
Sob + Soc
Fob + Foc
When you use a camera, where is location of an object?
between f and 2 f
at 2f
behind 2f
at f
The characteristics of the final image in usage of microscope are ……
Bigger, virtual, upright
Bigger, real, inverted
Smaller, virtual, upright
Smaller, real, inverted
A conductor wire with current of 5 A that is flowing for half an hour will transfer charges of ...
9000 C
150 C
2.5 C
none of them
A 24-volt accumulator turns on a lamp of 2 Ohm for 2 hours. The current passing through the lamp when it is on is …
3 ampere
6 ampere
12 ampere
96 ampere
90 J of heat is produced each second in a 10 Ω resistor. The potential difference across the resistor will be:
20 V
30 V
40 V
50 V
Three resistors: R1 = 2 Ω,R2 = 3 Ω, and R3 = 4 Ω are connected in series to each other. A voltmeter connected in parallel to resistor R2 measures voltage of 12 V. What is the net voltage in the circuit?
12 v
24 v
36 v
48 v
Three resistors: R1 = 1 Ω, R2 = 2 Ω, and R3 = 3 Ω are connected in series to each other and to a 36 V battery. What is the ammeter reading from battery before splitting into all branch and what is voltage in resistor 2 (R2)?
12 A and 24 V
6 A and 12 V
6 A and 36 V
3 A and 36 V
