PHYSICS SET 02

Question No.1

Force of attraction between the molecules of different substances is called______

1. Cohesive force
2. Adhesive force
3. Surface tension
4. None of these

Select Answer

Correct Answer: ( B )  

Question No.2

Which of the following does not belongs to mechanical waves.

1. Longitudinal waves
2. Transverse waves
3. Surface waves
4. Electromagnetic waves

Select Answer

Correct Answer: ( D )  

Question No.3

Light is a ___________wave.

1. Transverse
2. Longitudinal
3. Both of these
4. None of these

Select Answer

Correct Answer: ( A )  

Question No.4

The SI unit of mechanical power is______

1. Joule
2. Watt
3. Newton-second
4. Joule-second

Select Answer

Correct Answer: ( B )  

Question No.5

What is the SI unit of entropy?

1. Joule/sec
2. Joule/kelvin
3. J-kelvin
4. Joule-sec

Select Answer

Correct Answer: ( B )  

Question No.6

The unit of magnetic flux is_______

1. weber/meter
2. weber-ampere
3. weber-sec
4. weber

Select Answer

Correct Answer: ( D )  

Question No.7

Which of the following is a vector quantity?

1. Speed
2. Momentum
3. Momen of Inertia
4. Electric current

Select Answer

Correct Answer: ( B )  

Question No.8

Parsec is the unit of_______

1. Distance
2. Magnetic force
3. Time
4. Energy

Select Answer

Correct Answer: ( A )  

Question No.9

An artificial satellite orbiting around the earth does not fall down. This is because the attraction of the earth :

1. Does not exist at such distance
2. Is neutralized by the attraction of the moon
3. Provides the necessary acceleration for its motion
4. Provides the necessary speed for its steady motion

Select Answer

Correct Answer: ( C )  

Question No.10

The surface of a lake is frozen in severe winter, but the wate at its bottom is still liquid because____

1. ice is a bad conductor of heat
2. the density of water is maximum at 4°C
3. since the surface of the lake is at the same temperature as the air, no heat is lost
4. None of these

Select Answer

Correct Answer: ( B )  

Question No.11

Which of the following pair doesn't have the same dimension?

1. Work and Energy
2. Impulse and Momentum
3. Pressure and Stress
4. Force and Pressure

Select Answer

Correct Answer: ( D )  

Question No.12

Based on which of the following principle a rocket operates?

1. Conservation of energy
2. Conservation of momentum
3. Bernoulli's Theorem
4. Avogadro's concept

Select Answer

Correct Answer: ( B )  

Question No.13

The bodies executing free falling motion have __________

1. Equal velocity
2. Equal momentum
3. Equal acceleration
4. Equal force

Select Answer

Correct Answer: ( A )  

Question No.14

Who was the inventor of positron?

1. J.J Thomson
2. Chadwick
3. Anderson
4. Bohr

Select Answer

Correct Answer: ( C )  

Question No.15

Curie is the unit of__________

1. Radioactivity
2. Temperature
3. Heat
4. Energy

Select Answer

Correct Answer: ( A )  

Question No.16

Relative Humidity is measured by_______

1. Cyclotron
2. Hygrometer
3. Avometer
4. Barometer

Select Answer

Correct Answer: ( B )  

Question No.17

The shortest unit of length is __________

1. Micron
2. Fermimeter
3. Nanometer
4. Angstrum

Select Answer

Correct Answer: ( B )  

Question No.18

The theory of Gravity was given by________

1. Charles Babbage
2. Issac Newton
3. Michael Faraday
4. Max Planck

Select Answer

Correct Answer: ( B )  

Question No.19

The coil in a heater is made of which of the following ?

1. Nichrome
2. Tungsten
3. Copper
4. Iron

Select Answer

Correct Answer: ( A )  

Question No.20

In which medium an object weighs maximum?

1. Air
2. Water
3. Vacuum
4. Hydrogen

Select Answer

Correct Answer: ( C )