Question # 1

Which is an example of a longitudinal wave:

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Sound wave

Light wave

Radio wave

Water wave

The refractive index of internal coating of optical fibre is:

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1.56

1.51

1.53

1.58

After refraction from a convex lens, rays of light parallel to the principal axis converge at a point, this point of convex lens is called:

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Principal focus

Pole

Focal length

Optical center

An example of input device computer is:

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Keyboard

printer

monitor

RAM

Snell' law is:

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n = sin<x/sin <r

n=sin <i/sin<r

n = sin <r/sin<i

<i/<r

Which form of energy is sound:

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Electrical

mechanical

Thermal

Chemical

Angle opposite to the base of triangle of prism is called:

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angle of incidence

angle of refraction

angle of prism

emerging angle

Sun light consist of ____________ colour

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6

7

5

2

To see stomach problems we use:

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Gastroscope

Bronchoscope

Cystoscope

All of these

Which of the following is not processing:

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Arranging

Manipulating

Calculating

Gathering

The ray of light striking to the side of prism is called:

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refraction ray

incident ray

reflected ray

emergent ray

Which of the following quantities is not change during refraction of light?

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Its direction

Its speed

its frequency

Its wavelength

If a ray of light is glass is incident on an air surface at an angle greater than the critical angle, the ray will.

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refract only

reflect only

partially refract and partially reflect

Diffract only

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10th Class Physics Chapter 12 Geometrical Optics English Medium KPK Boards Online Mcqs MCQs With Answers

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