Science Entrance Mock Test 2082

The work done by the gravitational force on a freely falling body is:

• Positive

• Negative

• Zero

• Infinite

The speed of sound is greatest in:

• Air

• Water

• Steel

• Vacuum

Which law explains why a person leans forward while getting off a moving bus?

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

• Law of Conservation of Energy

Which of the following is not a unit of energy?

• Joule

• Calorie

• Electronvolt

• Newton

Which instrument is used to measure atmospheric pressure?

• Thermometer

• Barometer

• Hygrometer

• Galvanometer

Work done is zero when the angle between force and displacement is:

• 0°

• 45°

• 90°

• 180°

The absolute zero temperature is:

• 0°C

• -273°C

• 100°C

• -273.15°C

The image formed by a plane mirror is:

• Real and inverted

• Virtual and inverted

• Real and erect

• Virtual and erect

The resistance of an ideal voltmeter is:

• Zero

• Very low

• Very high

• Infinite

The speed of light in vacuum is:

• 3 × 10⁸ m/s

• 3 × 10⁶ m/s

• 3 × 10⁴ m/s

• 3 × 10² m/s