GSC101 Quiz 2 Solution

1) A water pump lift 70 kg of water to a height 16 m in 10 s, the power of pump is _______

1. 1120 watt
2. 44 watts
3. 1000 watt
4. 112 watts

2) The shortest distance between two points is also known as the:

1. distance
2. displacement
3. speed
4. acceleration

3) Which of the following halogens element has highest electron affinity>

1. Fluorine
2. bromine
3. Chlorine
4. lodine

4) Two thin lenses of power +6 D and -2 D are placed in contact with each other. Focal length of the combination is:

1. -0.25m
2. +0.25m
3. -4m
4. +4m

5) A motion of a pendulum of a clock is an example of

1. vibratory motion
2. translatory motion
3. random motion
4. circular motion

6) A hydroelectric power plant converts the gravitational potential energy of water to Electric Energy. If 150,000 kg of water flowing down a height of 35m generate 50 MW. The efficiency of the system is

1. 50 to 55%
2. 93 to 97%
3. 56 to 62%
4. 75 to 85%

7) The atom, which provides the electron pair, is called ___

1. Donor
2. receiver
3. gainer
4. accepter

8) Optical fiber work on:

1. Reflection
2. Polarization
3. Principle of total internal reflection
4. Refraction

9) All sciences for search of truth rely upon:

1. experiential validity
2. quality of observation
3. clarity of hypothesis
4. depth of knowledge

10) Metals are usually _______

1. Hard, ductile and malleable
2. Hard
3. Hard and ductile
4. Ductile and malleable