Level 16: Physics Principles & Physical Mechanics IQ

When we\are on a moving bus and look at the other passengers on the bus, what do we conclude about their motion?

1 Mark(s)

Your Answer:

A) They are in motion. A) They are in motion.
B) They are at rest. B) They are at rest.
C) They are jumping. C) They are jumping.
D) They are asleep. D) They are asleep.

Where should your eye be positioned when reading a measurement on a scale?

1 Mark(s)

Your Answer:

A) To the left of the mark A) To the left of the mark
B) To the right of the mark B) To the right of the mark
C) Directly above the mark C) Directly above the mark
D) Below the mark D) Below the mark

What is the boiling point of water on the Fahrenheit scale?

1 Mark(s)

Your Answer:

A) 100 °F; A) 100 °F;
B) 180 °F B) 180 °F
C) 212 °F C) 212 °F
D) 373 °F D) 373 °F

Which of the following force is utilised in reducing air pollution by removing dust, soot and fly-ash particles from the smoke coming out of chimneys of factories ?

1 Mark(s)

Your Answer:

magnetic force magnetic force
gravitational force gravitational force
electrostatic force electrostatic force
frictional force frictional force

Which of the following is NOT an SI unit of length?

1 Mark(s)

Your Answer:

A) Kilometre A) Kilometre
B) Centimetre B) Centimetre
C) Inch C) Inch
D) Millimetre D) Millimetre

What is a reference point?

1 Mark(s)

Your Answer:

A) A random point A) A random point
B) A fixed object or location B) A fixed object or location
C) The start of a measurement C) The start of a measurement
D) The end of a measurement D) The end of a measurement

The compact fluorescent electric lamp has:

1 Mark(s)

Your Answer:

nichrome filament nichrome filament
tungsten filament tungsten filament
chromium filament chromium filament
no filament no filament

The distance between Delhi and Mumbai is usually expressed in units of (NCERT Exemplar)

1 Mark(s)

Your Answer:

A) decametre A) decametre
B) metre B) metre
C) centimetre C) centimetre
D) kilometre D) kilometre

A light ray is incident on a mirror and gets reflected by it. The angle made by the incident ray with the normal to the mirror is 40° . What is the angle made by the reflected ray with the mirror ?

1 Mark(s)

Your Answer:

40° 40°
50° 50°
45° 45°
60° 60°

The most suitable material for making the core of an electromagnet is:

1 Mark(s)

Your Answer:

iron iron
brass brass
aluminium aluminium
steel steel

You are provided three scales A, B and C as shown in Fig. to measure a length of 10 cm. (NCERT Exemplar) For the correct measurement of the length you will use the scale

1 Mark(s)

Your Answer:

A) A only A) A only
B) B only B) B only
C) C only C) C only
D) Any of the three scales. 2. Fill in the blanks with appropriate words: 1. The SI unit of length is the ____________. Answer: metre 2. One metre is equal to ____________ centimetres. Answer: 100 3. One centimetre is equal to ____________ millimetres. Answer: 10 4. A handspan is an example of ____________ a unit. Answer: traditional 5. A flexible measuring tape is ideal for measuring the ____________ of a tree. Answer: girth 6. The length of a curved line can be measured accurately using a ____________ Answer: thread 7. The position of the eye should be directly ____________ the measurement mark to avoid parallax error. Answer: above 8. The zero mark on a scale must be ____________ to the object being measured. Answer: aligned 9. When using a scale with broken ends, you should start measuring from another ____________ mark. Answer: full 10. A ____________ is a fixed object or location used to describe the position of another object. Answer: reference point 11. An object is said to be in ____________ if its position changes with respect to a reference point over time. Answer: motion 12. The ____________ system of units was adopted to avoid confusion from different measurement systems used globally. Answer: International or SI 13. A ____________ marking on some scales represents units in inches, where 1 inch equals, 2.54 centimetres. Answer: secondary 3. State whether the statements given below are True or False: (i) The SI unit of length is the metre. Answer: True (ii) One metre is equal to 10 centimetres. Answer: False (iii) A handspan is a standard unit of measurement. Answer: False (iv) Flexible measuring tapes are ideal for measuring the girth of trees. Answer: True (v) To measure a curved line, you can use a thread and then measure the thread against a straight scale. Answer: True (vi) The correct position of the eye when measuring is directly above the measurement mark. Answer: True (vii) If the zero mark on a scale is unclear, you cannot use the scale for measurement. Answer: False (viii) A reference point is necessary to describe the position of an object accurately. Answer: True (ix) An object at rest changes its position with respect to a reference point over time. Answer: False (x) Circular motion refers to movement along a straight path. Answer: False (xi) Linear motion can be observed in a car driving on a straight road. Answer: True (xii) Oscillatory motion involves an object moving to and fro about a fixed position. Answer: True (xiii) The length of a table measured in handspans will be the same for everyone. Answer: False (xiv) Standard units of measurement are necessary for consistency and accuracy. Answer: True (xv) Metres and inches are both units used in the International System of Units. Answer: False 4. Match the following items given in Column A with that in Column B:

A piece of ribbon folded five times is placed along a 30 cm long measuring scale as shown in Fig. (NCERT Exemplar) The length of the ribbon is between

1 Mark(s)

Your Answer:

A) 1.15 m – 1.25 m A) 1.15 m – 1.25 m
B) 1.25 m – 1.35 m B) 1.25 m – 1.35 m
C) 1.50 m – 1.60 m C) 1.50 m – 1.60 m
D) 1.60 m – 1.70 m 50 m – 1.60 m D) 1.60 m – 1.70 m 50 m – 1.60 m

Which among the following will diverge a beam of light ?

1 Mark(s)

Your Answer:

concave mirror concave mirror
plane mirror plane mirror
convex lens convex lens
concave lens concave lens

Which type of thermometer measures temperature without making contact with the human body?

1 Mark(s)

Your Answer:

A) Digital thermometer A) Digital thermometer
B) Mercury thermometer B) Mercury thermometer
C) Infrared thermometer C) Infrared thermometer
D) Alcohol thermometer D) Alcohol thermometer

A concave mirror cannot be used as:

1 Mark(s)

Your Answer:

a magnifying mirror a magnifying mirror
a torch reflector a torch reflector
a dentist’s mirror a dentist’s mirror
a rear view mirror a rear view mirror

Which is substance was traditionally used in thermometers but is now avoided due to toxicity?

1 Mark(s)

Your Answer:

A) Alcohol A) Alcohol
B) Mercury B) Mercury
C) Water C) Water
D) Glycerin D) Glycerin

What type of motion does a merry- go-round exhibit?

1 Mark(s)

Your Answer:

A) Linear motion A) Linear motion
B) Circular motion B) Circular motion
C) Oscillatory motion C) Oscillatory motion
D) Irregular motion D) Irregular motion

What should be done to the digital thermometer before and after use?

1 Mark(s)

Your Answer:

A) Boil it A) Boil it
B) Clean it with alcohol B) Clean it with alcohol
C) Wash the tip with soap and water C) Wash the tip with soap and water
D) Freeze it D) Freeze it

What type of measuring tape/ scale is ideal for measuring curved lines?

1 Mark(s)

Your Answer:

A) Metal tape A) Metal tape
B) 15 cm scale B) 15 cm scale
C) Metre rod C) Metre rod
D) Flexible tape D) Flexible tape

What is the freezing point of water on the Celsius scale?

1 Mark(s)

Your Answer:

A) -273.15 °C A) -273.15 °C
B) 0 °C B) 0 °C
C) 32 °C C) 32 °C
D) 100 °C D) 100 °C

Which type of thermometer was used during the COVID-19 pandemic for non-contact measurement?

1 Mark(s)

Your Answer:

A) Digital thermometer A) Digital thermometer
B) Mercury thermometer B) Mercury thermometer
C) Infrared thermometer C) Infrared thermometer
D) Alcohol thermometer D) Alcohol thermometer

Assertion (A): Infrared thermometers were widely used during the COVID-19 pandemic. Reason (R): Infrared thermometers can measure temperature without direct contact with the body.

1 Mark(s)

Your Answer:

A) Both A and R are true and R is correct explanation of the assertion,
B) Both A and R are true but R is not the correct explanation of the assertion,
C) A is true but R is false, C) A is true but R is false,
D) A is false but R is true Match the following items given in Column A with that in Column B:

The angle of reflection is equal to the angle of incidence:

1 Mark(s)

Your Answer:

always always
sometimes sometimes
under special conditions under special conditions
never never

What type of motion does a swing exhibit?

1 Mark(s)

Your Answer:

A) Linear motion A) Linear motion
B) Circular motion B) Circular motion
C) Oscillatory motion C) Oscillatory motion
D) Random motion D) Random motion

If a person weighs 60 kg on Earth, what will behis weight on Moon ?

1 Mark(s)

Your Answer:

60 kg 60 kg
6 kg 6 kg
10 kg 10 kg
50 kg 50 kg

After using a thread to measure a curved line, what should you do next?

1 Mark(s)

Your Answer:

A) Measure the length of the thread against a straight scale.
B) Cut the thread. B) Cut the thread.
C) Mark the thread with a pen. C) Mark the thread with a pen.
D) Wrap the thread around the object again.

What is the unit of temperature in the Kelvin scale?

1 Mark(s)

Your Answer:

A) Degree Kelvin A) Degree Kelvin
B) Kelvin B) Kelvin
C) Degree Celsius C) Degree Celsius
D) Degree Fahrenheit D) Degree Fahrenheit

The following question is based on Assertion/Reason.

1 Mark(s)

Your Answer:

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
Assertion is correct but Reason is incorrect.
Both Assertion and Reason are incorrect.

When electric current is passed through the filament of a bulb, it gives off:

1 Mark(s)

Your Answer:

Sound Sound
Heat Heat
Magnetism Magnetism
Light Light
A and B A and B
B and C B and C

An OP-AMPs can amplify_______________?

1 Mark(s)

Your Answer:

D.C. D.C.
A.C. A.C.
Both A.C. & D.C. Both A.C. & D.C.
None of the above None of the above

What device measures temperature?

1 Mark(s)

Your Answer:

A) Barometer A) Barometer
B) Thermometer B) Thermometer
C) Hygrometer C) Hygrometer
D) Anemometer D) Anemometer

Which scale is primarily used for scientific temperature measurements?

1 Mark(s)

Your Answer:

A) Celsius A) Celsius
B) Fahrenheit B) Fahrenheit
C) Kelvin C) Kelvin
D) Both D) Both

In half-wave rectification the output D.C. voltages is obtained across the load for_______________?

1 Mark(s)

Your Answer:

The negative half cycle of A.C. The negative half cycle of A.C.
The positive half cycle of A.C. The positive half cycle of A.C.
The positive and negative half cycles The positive and negative half cycles
Either positive or negative half of A.C.

Digital thermometers measure temperature using whichsensors?

1 Mark(s)

Your Answer:

A) Light sensors A) Light sensors
B) Sound sensors B) Sound sensors
C) Heat sensors C) Heat sensors
D) Pressure sensors D) Pressure sensors

Four pieces of wooden sticks A, B, C and D are placed along the length of 30 cm long scale as shown in Fig. Which one of them is 3.4 cm in length? (NCERT Exemplar)

1 Mark(s)

Your Answer:

A) A A) A
B) B B) B
C) C C) C
D) D D) D

Evaluating Your Answers

Level 16: Physics Principles & Physical Mechanics IQ : Question 1 of 35