IGCSE Physics Paper-1: Specimen Questions with Answers 115 - 118 of 149
Question 115
Question MCQ▾
What is the momentum of a 10 kg truck travelling at 5 m/s?
Choices
Choice (4) | |
---|---|
a. | 2 Kg m/s |
b. | 50 Kg km/hr |
c. | 10 Kg m/s |
d. | 50 Kg m/s |
Answer
d.Explanation
Momentum refers to the quantity of motion of an object.
Momentum (kg m/s)
Question 116
Answer
d.Explanation
A = Mass number = 35
Here, the Z = Atomic number = number of protons = number of electrons present in the atom = 17
Question 117
Question MCQ▾
Three rays of light fall on a concave lens as shown.
Which diagram shows the path of the rays passing through the lens?
Choices
Choice (4) | |
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a. | |
b. | |
c. | |
d. |
Answer
b.Explanation
- Concave lens is thicker at the edges than the centers.
- The rays get diverge from the normal.
- The image formed by the concave lens is diminished image.
- It is smaller than the object and
- The image is virtual image.
Question 118
Question MCQ▾
Mercury of u-tube is exposed to air at below the sea level. What is the height of the mercury?
Choices
Choice (4) | |
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a. | |
b. | |
c. | |
d. |
Answer
b.Explanation
- Pressure at the surface of the earth or at sea level is equal in all directing. And when we go higher or mountain regions the pressure level decreases.
- At below sea level or lower down of the sea the pressure exerted at more pressure.
- Pressure exert always from the atmosphere to the lower.