IGCSE Physics Paper-1: Specimen Questions with Answers 115 - 118 of 149

Question 115

Question

MCQ▾

What is the momentum of a 10kg 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

Question

MCQ▾

How many Electrons are in a nucleus of Cl?

Choices

Choice (4)

a.

10

b.

18

c.

35

d.

17

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.

Image of the Light Fall

Which diagram shows the path of the rays passing through the lens?

Choices

Choice (4)

a.

The Light Fall Lens-3

b.

The Light Fall Lens-2

c.

The Light Fall Lens-4

d.

The Light Fall Lens-1

Answer

b.

Explanation

Image of the Lens
  • 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)

a.

The Mercury of U-Tube -3

b.

The Mercury of U-Tube -4

c.

The Mercury of U-Tube -2

d.

The Mercury of U-Tube -1

Answer

b.

Explanation

The Mercury of U-Tube
  • 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.

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