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Q:

Kelvin (K) is the unit of measurement of ________.

A) Density B) Pressure
C) Mass D) Temperature
 
Answer & Explanation Answer: D) Temperature

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Q:

A lemon kept in water in a glass tumbler appears to be bigger than its actual size when viewed from the sides. This is because of

A) reflection of light B) internal reflection of light
C) refraction of light D) diffraction of light
 
Answer & Explanation Answer: C) refraction of light

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Q:

The ratio of change in velocity of a body to the total time taken by it is its __________________.

A) acceleration B) displacement
C) force D) momentum
 
Answer & Explanation Answer: A) acceleration

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Q:

The spring balance works on the principle of __________

A) Boyle's Law B) Hooke's Law
C) Bernoulli's principle D) Pascal's Law
 
Answer & Explanation Answer: B) Hooke's Law

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Q:

Borosilicate glass wear is used in microwave oven because

A) It is not brittle B) It is highly heat resistant
C) It cooks faster than any other vessel D) It is energy efficient
 
Answer & Explanation Answer: B) It is highly heat resistant

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Q:

Convex and concave mirrors are examples of?

A) Plane mirrors B) Spherical mirrors
C) Inverted mirror D) Erect mirror
 
Answer & Explanation Answer: B) Spherical mirrors

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Q:

Which among the following determines the pitch of a sound?

A) Amplitude B) Frequency
C) Loudness D) Wavelength
 
Answer & Explanation Answer: B) Frequency

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Q:

Pressure cooker cooks rice faster because

A) it always lets the steam escape B) high pressure raises the boiling point of water
C) high pressure crushes the hard covering of rice grains D) it does not let the heat energy escape easily
 
Answer & Explanation Answer: B) high pressure raises the boiling point of water

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