science
Grade-7
Easy
Question
Air is a ____ object.
- Transparent
- Translucent
- Opaque
- None of the above
Hint:
Transparent
The correct answer is: Transparent
- Air is a transparent object .
- It allows most of the light to pass through it.
- So, the correct option is a.
- Materials like air, water, and clear glass are called transparent.
- When light encounters transparent materials, almost all of it passes directly through them.
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A partially immersed pencil in water appears bent because of ____.
- Reflection of light
- Refraction of light
- Transmission of light
- Absorption of light
A partially immersed pencil in water appears bent because of ____.
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- Reflection of light
- Refraction of light
- Transmission of light
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Daniel wanted to design an aquarium on his own for his fish. He wants to see his fish swimming in the water all the time. Which of the following materials will be best suitable for this purpose?
- Frosted glass
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Daniel wanted to design an aquarium on his own for his fish. He wants to see his fish swimming in the water all the time. Which of the following materials will be best suitable for this purpose?
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- Frosted glass
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Which of the following produce their own light?
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Which of the following produce their own light?
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A sheet of polythene is _____ and _____.
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- Water is luminous
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- Sun
- Moon
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- Sun
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Which of the following objects casts a dark shadow?
- Trunk of a tree
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Which of the following objects casts a dark shadow?
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Which of the following let only some amount of light pass through them?
- Laptop
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- Magnifying glass
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Which of the following let only some amount of light pass through them?
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- Laptop
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Which of the following is non-luminous?
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- Moon
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Which of the following is non-luminous?
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Which of the following lets all the light falling on it pass through?
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An object which produces and emits its own light is called ____.
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Justin and Sam are playing a game of hide and seek. Justin is hiding behind a frosted glass partition completely. Which of the following is correct in the given situation?
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- Sam will be feebly able to see Justin
- Sam will not be able to see Justin
- Sam will be able to see Justin clearly, but Justin will not be able to see Sam
Justin and Sam are playing a game of hide and seek. Justin is hiding behind a frosted glass partition completely. Which of the following is correct in the given situation?
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- Sam will be able to see Justin clearly
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Which of the following objects is not opaque?
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Which of the following objects is not opaque?
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Which of the following objects casts a dark shadow?
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Which of the following objects casts a dark shadow?
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