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light-7

Authored by Ulughbek Mirzoev

Physics

7th Grade

Used 1+ times

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60 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

If the Moon is 384 000 km from Earth, the Sun is 150 000 000 km from Earth, and the speed of light is 300000 km/s, calculate the time taken for light to travel from the Moon to the Earth.

1.28s

1.2 minutes

1.5s

500 second

2.

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

What is meant by monochromatic light?

Red light

Refraction

Single wavelength light

Reflection

3.

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

A man stands 10 m in front of a large, plane mirror. How far must he walk before he is 5 m away from his image?

10 m

7.5 m

5 m

2.5 m

4.

MULTIPLE CHOICE QUESTION

1 min • 2 pts

What is the critical angle for glass?

41°

45°

29°

49°

5.

MULTIPLE CHOICE QUESTION

1 min • 2 pts

What is the spreading effect called when white light passes through a prism?

Dispersion

Refraction

Reflection

Diffraction

6.

MULTIPLE CHOICE QUESTION

1 min • 2 pts

Which colour is deviated most by a prism?

Red

Green

Blue

Violet

7.

MULTIPLE CHOICE QUESTION

1 min • 2 pts

Which colour is deviated least?

Red

Green

Blue

Violet

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