Practice MCQ Questions and answers on Physics-GK Page-3 section-6

Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 Section 8 Section 9 Section 10 Section 11 Section 12 Section 13 Section 14 Section 15

21.
An optically plane surface reflects a beam of light

A. As a parallel beam in one direction

B. As diffused beams in all directions

C. As parallel beams in all directions

D. As a diffused beam in one direction

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22.
The focal length of a concave mirror with a radius of curvature of 20.0 cm is :

A. 20 cm

B. 5 cm

C. 10 cm

D. 15 cm

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23.
The type of mirrors used in the headlamp of cars is

A. Parabolic concave

B. Plane

C. Spherical convex

D. Cylindrical concave

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24.
Shaving mirror is

A. Convex

B. Concave

C. Plane

D. Parabolic

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25.
What changes will happen to a bowl of ice and water kept at exactly zero degree Celsius ?

A. All ice will melt

B. All water will become ice

C. No change will happen

D. Only some ice will melt

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26.
At what temperature do the Fahrenheit and Celsius scales give the same reading?

A. 212 degrees

B. 32 degreees

C. -40 degreees

D. 0 degreees

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27.
The temperature of a liquid is 32° F. What is its temperature in Celsius scale?

A. 32° C

B. 0° C

C. 100° C

D. 212° C

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28.
To convert temperature from Celcius to Kelvin scale, you must ________ the given temperature.

A. Subtract 273

B. Multiply 273

C. Add 273

D. Divide by 273

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29.
0°K is equivalent to

A. 273°C

B. – 273°C

C. 0°C

D. 100°C

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30.
In very cold countries alcohol is used as a thermometric liquid because

A. Alcohol is a poor conductor of heat

B. Alcohol can be coloured for its level to be seen easily

C. Its freezing point is very low

D. It will not stick to the glass tube

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Practice MCQ Questions and answers on Physics-GK

21. An optically plane surface reflects a beam of light

Answer & Solution

22. The focal length of a concave mirror with a radius of curvature of 20.0 cm is :

Answer & Solution

23. The type of mirrors used in the headlamp of cars is

Answer & Solution

24. Shaving mirror is

Answer & Solution

25. What changes will happen to a bowl of ice and water kept at exactly zero degree Celsius ?

Answer & Solution

26. At what temperature do the Fahrenheit and Celsius scales give the same reading?

Answer & Solution

27. The temperature of a liquid is 32° F. What is its temperature in Celsius scale?

Answer & Solution

28. To convert temperature from Celcius to Kelvin scale, you must ________ the given temperature.

Answer & Solution

29. 0°K is equivalent to

Answer & Solution

30. In very cold countries alcohol is used as a thermometric liquid because

Answer & Solution

Read More Section(Physics)

21.
An optically plane surface reflects a beam of light

22.
The focal length of a concave mirror with a radius of curvature of 20.0 cm is :

23.
The type of mirrors used in the headlamp of cars is

24.
Shaving mirror is

25.
What changes will happen to a bowl of ice and water kept at exactly zero degree Celsius ?

26.
At what temperature do the Fahrenheit and Celsius scales give the same reading?

27.
The temperature of a liquid is 32° F. What is its temperature in Celsius scale?

28.
To convert temperature from Celcius to Kelvin scale, you must ________ the given temperature.

29.
0°K is equivalent to

30.
In very cold countries alcohol is used as a thermometric liquid because