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Q:

 If an object travels in a straight line and its velocity increases or decreases by equal amounts in equal intervals of time, then the acceleration of the object is said to be ______________.

A) linear B) uniform
C) translational D)
 
Answer & Explanation Answer: B) uniform

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Q:

Which is the form of energy that does NOT occur while riding a bicycle?

A) Heat energy B) Kinetic energy
C) Chemical energy D) Mechanical energy
 
Answer & Explanation Answer: C) Chemical energy

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Q:

A solar eclipse occurs when

A) moon comes in the middle of sun and earth B) sun comes in the middle of moon and earth
C) earth comes in the middle of moon and sun D) All of the above
 
Answer & Explanation Answer: A) moon comes in the middle of sun and earth

Explanation:

A solar eclipse happens when the moon gets in the way of the sun's light and casts its shadow on Earth. Solar eclipses happen when the New Moon comes between the Sun and Earth and blocks out the Sun's rays.

 

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Q:

The coil wire in the electric room heater or electric cooking heater is called __________.

A) Circuit B) Element
C) Filament D) Cells
 
Answer & Explanation Answer: B) Element

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Q:

Which type of electromagnetic radiation has the shortest wavelength?

A) Gamma rays B) X-rays
C) Radio waves D) Infrared rays
 
Answer & Explanation Answer: A) Gamma rays

Explanation:

The order of wavelengths of electromagnetic spectrum is as follows ::

(Shortest to Longest) - Gamma, X-Rays, UV, Visible, Infrared, Microwaves, Radio Waves.

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Q:

Sunspots appear dark because they are

A) hotter than the rest of the Sun's surface. B) more magnetic than the rest of the Sun's surface. 
C) cooler than the rest of the Sun's surface. D) None of the above
 
Answer & Explanation Answer: C) cooler than the rest of the Sun's surface.

Explanation:

Sunspots are a magnetic phenomenon on the Sun.

The reason a sunspot appears dark is that they are cooler than the rest of the Sun's surface and also the gas inside the spot where the magnetic field is strongest is only emitting about 1/4 as much light as from the rest of the solar surface. 

 

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Q:

What will be the value of the kinetic energy (Ek) of a moving body with mass m, if its speed is doubled from v to 2v?

A) 1/2 Ek B) 4 Ek
C) There will be no change in Ek D) 2 Ek
 
Answer & Explanation Answer: B) 4 Ek

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Q:

What is the effective resistance (in Ω) of two resistors 12 Ω and 24 Ω connected in parallel?

A) 36 B) 8
C) 16 D) 72
 
Answer & Explanation Answer: B) 8

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