6277 + Interview Questions in Physics Page 101 InterviewSolution

5001.	What happens If we heat iron rod? Is it observable or not
Answer» What happens If we heat iron rod? Is it observable or not

Discussion

5002.	It was a rainy day in Bangalore. Rohit was sitting beside the window when he saw a lightning. He started his stopwatch. He found that after 22 seconds of lightning its roaring was heard. Calculate the height of the clouds (approximately) which caused this lightning. Given, Speed of light = 3×108ms and Speed of sound = 340ms.
Answer» It was a rainy day in Bangalore. Rohit was sitting beside the window when he saw a lightning. He started his stopwatch. He found that after 22 seconds of lightning its roaring was heard. Calculate the height of the clouds (approximately) which caused this lightning. Given, Speed of light = $3 \times 10^{8} \frac{m}{s}$ and Speed of sound = $340 \frac{m}{s}$ .

Discussion

5003.	Two tanks with different water are connected using a pipe at the bottom. Then the water will flow through the pipe till the:
Answer» Two tanks with different water are connected using a pipe at the bottom. Then the water will flow through the pipe till the:

Discussion

5004.	If there is no flow of current in the circuit, which can be the suitable reason from the following?
Answer» If there is no flow of current in the circuit, which can be the suitable reason from the following?

Discussion

5005.	Why does light refract?
Answer» Why does light refract?

Discussion

5006.	How are temperature and hotness of body related?
Answer» How are temperature and hotness of body related?

Discussion

5007.	Sushweta has to send a laser signal to Garima. But she finds out that the signal misses Garima by 40. Suppose the angle of incidence is X0. Then angle between Shweta and Garima in terms of X0 can be represented as:
Answer» Sushweta has to send a laser signal to Garima. But she finds out that the signal misses Garima by $4^{0}$ . Suppose the angle of incidence is $X^{0}$ . Then angle between Shweta and Garima in terms of $X^{0}$ can be represented as:

Discussion

5008.	___ is the device which controls (prevents or allows) current to flow through it.
Answer» ___ is the device which controls (prevents or allows) current to flow through it.

Discussion

5009.	Question 4 A piece of ribbon folded five times is placed along a 30 cm long measuring scale as shown in Fig. The length of the ribbon is between: (a) 1.15 - 1.25 m (b) 1.25 - 1.35 m (c) 1.5 - 1.6 m (d) 1.6 - 1.70 m
Answer» Question 4 A piece of ribbon folded five times is placed along a 30 cm long measuring scale as shown in Fig. The length of the ribbon is between: (a) 1.15 - 1.25 m (b) 1.25 - 1.35 m (c) 1.5 - 1.6 m (d) 1.6 - 1.70 m

5009.

Question 4 A piece of ribbon folded five times is placed along a 30 cm long measuring scale as shown in Fig. The length of the ribbon is between: (a) 1.15 - 1.25 m (b) 1.25 - 1.35 m (c) 1.5 - 1.6 m (d) 1.6 - 1.70 m

Answer»

Question 4

A piece of ribbon folded five times is placed along a 30 cm long measuring scale as shown in Fig.

The length of the ribbon is between:

(a) 1.15 - 1.25 m

(b) 1.25 - 1.35 m

(c) 1.5 - 1.6 m

(d) 1.6 - 1.70 m

Discussion

5010.	Explain how Lightning occur in terms of the charges produced by rubbing. [5 MARKS]
Answer» Explain how Lightning occur in terms of the charges produced by rubbing. [5 MARKS]

Discussion

5011.	The thermometer is kept under the tongue. Why?
Answer» The thermometer is kept under the tongue. Why?

Discussion

5012.	An object is placed 1.5 m from a plane mirror. How far is the image from the object?
Answer» An object is placed 1.5 m from a plane mirror. How far is the image from the object?

Discussion

5013.	A block of ice
Answer» A block of ice

Discussion

5014.	The cooling unit of a refrigerator is made at the top because:
Answer» The cooling unit of a refrigerator is made at the top because:

Discussion

5015.	Question 1 (i) Classify the following as motion along a straight line, circular or oscillatory motion: (i) Motion of your hands while running.
Answer» Question 1 (i) Classify the following as motion along a straight line, circular or oscillatory motion: (i) Motion of your hands while running.

Discussion

5016.	The heat energy gets transferred from sun to earth by process of ___
Answer» The heat energy gets transferred from sun to earth by process of ___

Discussion

5017.	The good conductivity of metals, as compared to non-metals is due to the fact that:
Answer» The good conductivity of metals, as compared to non-metals is due to the fact that:

Discussion

5018.	When we hold or hand close to the side of the flame our hand doesn't get burnt , but when we hold our hand close to the tip of the flame we can feel the heat getting more and more hotter. Why of that happening?
Answer» When we hold or hand close to the side of the flame our hand doesn't get burnt , but when we hold our hand close to the tip of the flame we can feel the heat getting more and more hotter. Why of that happening?

Discussion

5019.	Question 1 (ii) Find the volume of a sphere whose radius is: (ii) 0.63 m [Assume π=227]
Answer» Question 1 (ii) Find the volume of a sphere whose radius is: (ii) 0.63 m $[A s s u m e π = \frac{22}{7}]$

Discussion

5020.	If the electric consumption of your house is 20 kWh in one day and the cost of electricity is Rs 4 per unit, find out how much electricity bill you will have to pay for one month(30 days).
Answer» If the electric consumption of your house is $20 k W h$ in one day and the cost of electricity is $R s 4$ per unit, find out how much electricity bill you will have to pay for one month( $30 d a y s$ ).

5020.

If the electric consumption of your house is 20 kWh in one day and the cost of electricity is Rs 4 per unit, find out how much electricity bill you will have to pay for one month(30 days).

Answer»

If the electric consumption of your house is $20 k W h$ in one day and the cost of electricity is $R s 4$ per unit, find out how much electricity bill you will have to pay for one month( $30 d a y s$ ).

Discussion

5021.	Air moves from a region of ___ pressure to a region of low pressure.
Answer» Air moves from a region of ___ pressure to a region of low pressure.

Discussion

5022.	The trachea is also referred as
Answer» The trachea is also referred as

Discussion

5023.	Why is your face upside down in the inward curve of the spoon?
Answer» Why is your face upside down in the inward curve of the spoon?

Discussion

5024.	A body A travels at 20 m s−1 and a body B travels at 30 m s−1. If the distance covered by these bodies is the same, what is the ratio of the time taken by A to the time taken by B?
Answer» A body A travels at $20 {m s}^{- 1}$ and a body B travels at $30 {m s}^{- 1}$ . If the distance covered by these bodies is the same, what is the ratio of the time taken by A to the time taken by B?

Discussion

5025.	If an object moves 5 m/sec towards the mirror and the mirror also moves with speed 5 m/sec towards the object, then the velocity by which image will move towards the mirror is
Answer» If an object moves 5 m/sec towards the mirror and the mirror also moves with speed 5 m/sec towards the object, then the velocity by which image will move towards the mirror is

Discussion

5026.	An electromagnet is an application of the phenomenon of ________ effect of electric current.
Answer» An electromagnet is an application of the phenomenon of ________ effect of electric current.

Discussion

5027.	The way(s) by which we can demagnetize a magnet is/are
Answer» The way(s) by which we can demagnetize a magnet is/are

Discussion

5028.	Which part of a thermos flask prevents loss of heat?
Answer» Which part of a thermos flask prevents loss of heat?

Discussion

5029.	Differentiate the state of rest and motion of an object. [2 MARKS]
Answer» Differentiate the state of rest and motion of an object. [2 MARKS]

Discussion

5030.	Given the area of a circle is 36 cm2. The area of the rectangle is 16th of the area of the circle. If the breadth of the rectangle is 1 cm, what is the length?
Answer» Given the area of a circle is $36 c m^{2}$ . The area of the rectangle is $\frac{1}{6}$ ^th of the area of the circle. If the breadth of the rectangle is $1 c m$ , what is the length?

Discussion

5031.	Which type of object does cast a shadow?
Answer» Which type of object does cast a shadow?

Discussion

5032.	Where is low pressure zone created in the aeroplane and how does it help in the flying
Answer» Where is low pressure zone created in the aeroplane and how does it help in the flying

Discussion

5033.	If we jump from one or two stairs we don't get hurt but if we jump from a building we get hurt .Why?
Answer» If we jump from one or two stairs we don't get hurt but if we jump from a building we get hurt .Why?

Discussion

5034.	How we can differentiate different type of mirrorS without touching
Answer» How we can differentiate different type of mirrorS without touching

Discussion

5035.	The thin wire that gives off light in a bulb is known as ___ .
Answer» The thin wire that gives off light in a bulb is known as ___ .

Discussion

5036.	Copper plated utensils help cooking:
Answer» Copper plated utensils help cooking:

Discussion

5037.	Calculate the temperature on Celcius scale for which karengey scale reads half the value on celcius scale. How to calculate it?
Answer» Calculate the temperature on Celcius scale for which karengey scale reads half the value on celcius scale. How to calculate it?

Discussion

5038.	Convert the temperature of 276 K to the celsius scale :
Answer» Convert the temperature of 276 K to the celsius scale :

Discussion

5039.	What is so special about black colour that it absorbs wavelengths of all the colours?
Answer» What is so special about black colour that it absorbs wavelengths of all the colours?

Discussion

5040.	Units of workdone is___
Answer» Units of workdone is___

Discussion

5041.	When light strikes a transparent object then
Answer» When light strikes a transparent object then

Discussion

5042.	If an electric switch is off, then:
Answer» If an electric switch is off, then:

Discussion

5043.	Question 6 Fig (a–d) shows a student reading a doctor’s thermometer. Which of the figure indicates the correct method of reading temperature?
Answer» Question 6 Fig (a–d) shows a student reading a doctor’s thermometer. Which of the figure indicates the correct method of reading temperature?

5043.

Question 6 Fig (a–d) shows a student reading a doctor’s thermometer. Which of the figure indicates the correct method of reading temperature?

Answer»

Question 6

Fig (a–d) shows a student reading a doctor’s thermometer. Which of the figure indicates the correct method of reading temperature?

Discussion

5044.	Write any one principal working on elecrice current
Answer» Write any one principal working on elecrice current

Discussion

5045.	The odometer of a car reads 57321.0 km when the clock shows the time 08:30 AM. What is the distance moved by the car, if at 08:50 AM, the odometer reading has changed to 57336.0 km? Calculate the speed of the car in km/min during this time. Express the speed in km/h also.
Answer» The odometer of a car reads 57321.0 km when the clock shows the time 08:30 AM. What is the distance moved by the car, if at 08:50 AM, the odometer reading has changed to 57336.0 km? Calculate the speed of the car in km/min during this time. Express the speed in km/h also.

Discussion

5046.	The image formed by a concave mirror ____________ the object.
Answer» The image formed by a concave mirror ____________ the object.

Discussion

5047.	Name some objects that absorb light except black .
Answer» Name some objects that absorb light except black .

Discussion

5048.	Chemically the major component of charcoal is:
Answer» Chemically the major component of charcoal is:

Discussion

5049.	The bulb in the thermometer has:
Answer» The bulb in the thermometer has:

Discussion

5050.	Name the device used to protect the electric circuits from over loading and short circuit. On what effect of currect does it work?
Answer» Name the device used to protect the electric circuits from over loading and short circuit. On what effect of currect does it work?

5050.

Name the device used to protect the electric circuits from over loading and short circuit. On what effect of currect does it work?

Answer»

Name the device used to protect the electric circuits from over loading and short circuit. On what effect of currect does it work?

Discussion

Explore topic-wise InterviewSolutions in .

What happens If we heat iron rod? Is it observable or not

Two tanks with different water are connected using a pipe at the bottom. Then the water will flow through the pipe till the:

If there is no flow of current in the circuit, which can be the suitable reason from the following?

Why does light refract?

How are temperature and hotness of body related?

Sushweta has to send a laser signal to Garima. But she finds out that the signal misses Garima by 40. Suppose the angle of incidence is X0. Then angle between Shweta and Garima in terms of X0 can be represented as:

___ is the device which controls (prevents or allows) current to flow through it.

Question 4 A piece of ribbon folded five times is placed along a 30 cm long measuring scale as shown in Fig. The length of the ribbon is between: (a) 1.15 - 1.25 m (b) 1.25 - 1.35 m (c) 1.5 - 1.6 m (d) 1.6 - 1.70 m

Explain how Lightning occur in terms of the charges produced by rubbing. [5 MARKS]

The thermometer is kept under the tongue. Why?

An object is placed 1.5 m from a plane mirror. How far is the image from the object?

A block of ice

The cooling unit of a refrigerator is made at the top because:

Question 1 (i) Classify the following as motion along a straight line, circular or oscillatory motion: (i) Motion of your hands while running.

The heat energy gets transferred from sun to earth by process of ___

The good conductivity of metals, as compared to non-metals is due to the fact that:

When we hold or hand close to the side of the flame our hand doesn't get burnt , but when we hold our hand close to the tip of the flame we can feel the heat getting more and more hotter. Why of that happening?

Question 1 (ii) Find the volume of a sphere whose radius is: (ii) 0.63 m [Assume π=227]

If the electric consumption of your house is 20 kWh in one day and the cost of electricity is Rs 4 per unit, find out how much electricity bill you will have to pay for one month(30 days).

Air moves from a region of ___ pressure to a region of low pressure.

The trachea is also referred as

Why is your face upside down in the inward curve of the spoon?

A body A travels at 20 m s−1 and a body B travels at 30 m s−1. If the distance covered by these bodies is the same, what is the ratio of the time taken by A to the time taken by B?

If an object moves 5 m/sec towards the mirror and the mirror also moves with speed 5 m/sec towards the object, then the velocity by which image will move towards the mirror is

An electromagnet is an application of the phenomenon of ________ effect of electric current.

The way(s) by which we can demagnetize a magnet is/are

Which part of a thermos flask prevents loss of heat?

Differentiate the state of rest and motion of an object. [2 MARKS]

Given the area of a circle is 36 cm2. The area of the rectangle is 16th of the area of the circle. If the breadth of the rectangle is 1 cm, what is the length?

Which type of object does cast a shadow?

Where is low pressure zone created in the aeroplane and how does it help in the flying

If we jump from one or two stairs we don't get hurt but if we jump from a building we get hurt .Why?

How we can differentiate different type of mirrorS without touching

The thin wire that gives off light in a bulb is known as ___ .

Copper plated utensils help cooking:

Calculate the temperature on Celcius scale for which karengey scale reads half the value on celcius scale. How to calculate it?

Convert the temperature of 276 K to the celsius scale :

What is so special about black colour that it absorbs wavelengths of all the colours?

Units of workdone is___

When light strikes a transparent object then

If an electric switch is off, then:

Question 6 Fig (a–d) shows a student reading a doctor’s thermometer. Which of the figure indicates the correct method of reading temperature?

Write any one principal working on elecrice current

The odometer of a car reads 57321.0 km when the clock shows the time 08:30 AM. What is the distance moved by the car, if at 08:50 AM, the odometer reading has changed to 57336.0 km? Calculate the speed of the car in km/min during this time. Express the speed in km/h also.

The image formed by a concave mirror ____________ the object.

Name some objects that absorb light except black .

Chemically the major component of charcoal is:

The bulb in the thermometer has:

Name the device used to protect the electric circuits from over loading and short circuit. On what effect of currect does it work?