3752 + Interview Questions in Physics Page 33 InterviewSolution

1601.	Why does the smaller magnet align itself in the direction of the bigger magnet?
Answer» Why does the smaller magnet align itself in the direction of the bigger magnet?

Discussion

1602.	33. If c be the speed of sound in air and c' be the RMS velocity then 1)c
Answer» 33. If c be the speed of sound in air and c' be the RMS velocity then 1)c

Discussion

1603.	1 gallen is equal to how many metres
Answer» 1 gallen is equal to how many metres

Discussion

1604.	If spinning speed of the earth is decreased then what will happen to the weight of the body at poles? And why is it so?
Answer» If spinning speed of the earth is decreased then what will happen to the weight of the body at poles? And why is it so?

Discussion

1605.	if the mass of a planet revolving around the sun is doubled and its frequency of revolution remains constant ,then radius of its orbit will be
Answer» if the mass of a planet revolving around the sun is doubled and its frequency of revolution remains constant ,then radius of its orbit will be

Discussion

1606.	The maximum distance through which a full dresses astronaut can jump on the earth is 0.5m. Estimate the maximum ventricle distance through which he can jump on the moon,which has a mean a density 2/3rd that of the earth and radius one quarter that of the earth.
Answer» The maximum distance through which a full dresses astronaut can jump on the earth is 0.5m. Estimate the maximum ventricle distance through which he can jump on the moon,which has a mean a density 2/3rd that of the earth and radius one quarter that of the earth.

Discussion

1607.	नीचे दिए गए वाक्यों का पाठ के संदर्भ में अर्थ लिखिए-दक्खिन, पच्छिम, यक-सां, एक जुज, ढढ्ढे
Answer» नीचे दिए गए वाक्यों का पाठ के संदर्भ में अर्थ लिखिए- दक्खिन, पच्छिम, यक-सां, एक जुज, ढढ्ढे

Discussion

1608.	what is friction
Answer» what is friction

Discussion

1609.	Compare the objects and choose the one with the correct symbol.
Answer» Compare the objects and choose the one with the correct symbol.

Discussion

1610.	3 chares 4q,Q and q aer placed in a straight line of lrenlgth l at points 0, l/2and l dis†an ce away from one end respectively. what should be Q in order to make the net force on q to be zer
Answer» 3 chares 4q,Q and q aer placed in a straight line of lrenlgth l at points 0, l/2and l dis†an ce away from one end respectively. what should be Q in order to make the net force on q to be zer

Discussion

1611.	14. What is paramagnetic and diamagnetic property ?
Answer» 14. What is paramagnetic and diamagnetic property ?

Discussion

1612.	ntA tree trunk of diameter 20 CM Lies in a horizontal field. A lazy grasshopper wants to jump over the trunk. Find the minimum take-off speed of grasshopper that will suffice.( air resistance is negligible).n
Answer» ntA tree trunk of diameter 20 CM Lies in a horizontal field. A lazy grasshopper wants to jump over the trunk. Find the minimum take-off speed of grasshopper that will suffice.( air resistance is negligible).n

Discussion

1613.	why is the relative error of the time period of an oscilation is the least count of stopwatch /total time taken for certain number of oscillations , why is the least count of the instrument acting as the absolute error in the time period?when we are calculating the relative error in the time period of one oscillation why should we consider the total time taken which is variable with the increase or decrease in the number of oscilations ?
Answer» why is the relative error of the time period of an oscilation is the least count of stopwatch /total time taken for certain number of oscillations , why is the least count of the instrument acting as the absolute error in the time period? when we are calculating the relative error in the time period of one oscillation why should we consider the total time taken which is variable with the increase or decrease in the number of oscilations ?

Discussion

1614.	Which of the following is NOT a magnetic material?
Answer» Which of the following is NOT a magnetic material?

Discussion

1615.	What is meant by quantity? Give an example.
Answer» What is meant by quantity? Give an example.

Discussion

1616.	When will pluto and neptune hit each other (or smash into one another)?
Answer» When will pluto and neptune hit each other (or smash into one another)?

Discussion

1617.	The length of a linear rod is measured as 100.1cm.The approximate error in the measurement is
Answer» The length of a linear rod is measured as 100.1cm.The approximate error in the measurement is

Discussion

1618.	When at the south pole of the earth, the south pole of a magnet is brought near the north pole of a freely suspended magnetic needle, it will_____.
Answer» When at the south pole of the earth, the south pole of a magnet is brought near the north pole of a freely suspended magnetic needle, it will_____.

Discussion

1619.	A ramp and a hill are examples of which simple machine?
Answer» A ramp and a hill are examples of which simple machine?

Discussion

1620.	A truck covers first 80 km in 2 hours, and the remaining 60 km in the next 3 hours. What is the average speed of the truck?
Answer» A truck covers first $80 k m$ in $2 h o u r s$ , and the remaining $60 k m$ in the next $3 h o u r s$ . What is the average speed of the truck?

Discussion

1621.	Which of the following depicts the usefulness of a machine?
Answer» Which of the following depicts the usefulness of a machine?

Discussion

1622.	What shape of a shadow will a birthday cap when light is from its left side?
Answer» What shape of a shadow will a birthday cap when light is from its left side?

Discussion

1623.	The curved surface area of a hemisphere is 308 m2. Find the volume and the total surface area of hemisphere.
Answer» The curved surface area of a hemisphere is $308 m^{2} .$ Find the volume and the total surface area of hemisphere.

Discussion

1624.	Which is the only planet that has water and air that supports life?
Answer» Which is the only planet that has water and air that supports life?

Discussion

1625.	The wavelength of light coming from sodium source is 589 nm in air. What will be its wavelength in water?Refractive index of water is 1.33.
Answer» The wavelength of light coming from sodium source is $589 nm$ in air. What will be its wavelength in water $?$ Refractive index of water is $1.33$ .

Discussion

1626.	Where are the 5th state of matter BEC used?
Answer» Where are the 5th state of matter BEC used?

Discussion

1627.	Which of the following is a set of solid objects?
Answer» Which of the following is a set of solid objects?

Discussion

1628.	इकट्ठा किए हुए टिकटों का अलग-अलग तरह से वर्गीकरण किया जा सकता है। जैसे, देश के आधार पर। ऐसे और आधार सोचकर लिखो।
Answer» इकट्ठा किए हुए टिकटों का अलग-अलग तरह से वर्गीकरण किया जा सकता है। जैसे, देश के आधार पर। ऐसे और आधार सोचकर लिखो।

Discussion

1629.	Show that when a Body is dropped from a height sum of its kinetic energy at any ins†an t during its fall is cons†an t.
Answer» Show that when a Body is dropped from a height sum of its kinetic energy at any ins†an t during its fall is cons†an t.

Discussion

1630.	ntQ. A smooth wedge A is fitted in a chamber hanging from a fixed ceiling near the earth's surface. A block B placed at the top of the wedge takes time T to slide down the length of the wedge and the cable supporting the chamber is broken at the same instant, the block will ben nt(a) take a longer time T to slide down the wedgen nt(b) take a time shorter than T to slide down the wedgen nt(c) remain at the top of the wedgen nt(d) jump off the wedgen
Answer» ntQ. A smooth wedge A is fitted in a chamber hanging from a fixed ceiling near the earth's surface. A block B placed at the top of the wedge takes time T to slide down the length of the wedge and the cable supporting the chamber is broken at the same instant, the block will ben nt(a) take a longer time T to slide down the wedgen nt(b) take a time shorter than T to slide down the wedgen nt(c) remain at the top of the wedgen nt(d) jump off the wedgen

Discussion

1631.	What is the colour of the star named Rigel?
Answer» What is the colour of the star named Rigel?

Discussion

1632.	What happens when someone gets electrocuted
Answer» What happens when someone gets electrocuted

Discussion

1633.	Suggest an activity to prepare a magnetic compass by using an iron needle and a bar magnet.
Answer» Suggest an activity to prepare a magnetic compass by using an iron needle and a bar magnet.

Discussion

1634.	How can a point charge produce non uniform electric field?Is electric field due charge always non uniform
Answer» How can a point charge produce non uniform electric field? Is electric field due charge always non uniform

Discussion

1635.	John wants to go to school on his bicycle. The grooves of his bicycle's tyres are worn out due to heavy use. Suggest the suitable path that he should take to avoid slipping.
Answer» John wants to go to school on his bicycle. The grooves of his bicycle's tyres are worn out due to heavy use. Suggest the suitable path that he should take to avoid slipping.

Discussion

1636.	The threads on a screw are an example of _______ .
Answer» The threads on a screw are an example of _______ .

Discussion

1637.	State Right hand thumb rule.
Answer» State Right hand thumb rule.

Discussion

1638.

Name the force applied in each of the following actions : No. Action Force applied 1. A bullock pulling a cart 2. A crane lifting a heavy iron load. 3. Weighing something on a spring balance. 4. Applying the brakes on a bicycle. 5. Picking up paper scraps with a plastic ruler.

Answer»

Name the force applied in each of the following actions :

No.	Action	Force applied
1.	A bullock pulling a cart
2.	A crane lifting a heavy iron load.
3.	Weighing something on a spring balance.
4.	Applying the brakes on a bicycle.
5.	Picking up paper scraps with a plastic ruler.

Discussion

1639.	Three metallic solid cubes whose edges are 3 cm, 4 cm and 5 cm are melted and formed into a single cube. Find the edge of the cube so formed.
Answer» Three metallic solid cubes whose edges are 3 cm, 4 cm and 5 cm are melted and formed into a single cube. Find the edge of the cube so formed.

Discussion

1640.	58.What is the difference between asteroids and meteroids?
Answer» 58.What is the difference between asteroids and meteroids?

Discussion

1641.	44.A body executes SHM under the action of F1 force with time period 0.8 s. If there force is changed to F2, it executes time period of 0.6 s. Now both F1 and F2 act simultaneously in the same direction. What is the new Periodic time?
Answer» 44.A body executes SHM under the action of F1 force with time period 0.8 s. If there force is changed to F2, it executes time period of 0.6 s. Now both F1 and F2 act simultaneously in the same direction. What is the new Periodic time?

Discussion

1642.	The most common kind of iron nucleus has a mass number of 56. Find the radius of the nucleus. (Take R0=1.2×10−15 m:(56)13=3.82)
Answer» The most common kind of iron nucleus has a mass number of $56$ . Find the radius of the nucleus. $(Take R_{0} = 1.2 \times 10^{- 15} m : (56)^{\frac{1}{3}} = 3.82)$

Discussion

1643.	Paheli and Boojho observe a bright object in the night sky which was not twinkling. Paheli says, it is a star and Boojho says it is a planet. Who is correct? Do stars emit light only during night? [2 MARKS]
Answer» Paheli and Boojho observe a bright object in the night sky which was not twinkling. Paheli says, it is a star and Boojho says it is a planet. Who is correct? Do stars emit light only during night? [2 MARKS]

Discussion

1644.	anacitor is charged to store an energy U. The chargingbatteryconnected to the first capacitor in parallel. The energy in eachof the capacitors is:(a) U/2(c) U42. Ais disconnected. An identical capacitor is now(AIPMT 2000)(b) 3U/2(d) U/4
Answer» anacitor is charged to store an energy U. The chargingbatteryconnected to the first capacitor in parallel. The energy in eachof the capacitors is:(a) U/2(c) U42. Ais disconnected. An identical capacitor is now(AIPMT 2000)(b) 3U/2(d) U/4

Discussion

1645.	Question 6 Fill in the blanks (i) When a bar magnet is broken; each of the broken part will have __ pole/poles. (ii) In a bar magnet, magnetic attraction is ____ near its ends.
Answer» Question 6 Fill in the blanks (i) When a bar magnet is broken; each of the broken part will have __ pole/poles. (ii) In a bar magnet, magnetic attraction is ____ near its ends.

1645.

Question 6 Fill in the blanks (i) When a bar magnet is broken; each of the broken part will have pole/poles. (ii) In a bar magnet, magnetic attraction is __ near its ends.

Answer»

Question 6

Fill in the blanks
(i) When a bar magnet is broken; each of the broken part will have __ pole/poles.
(ii) In a bar magnet, magnetic attraction is ____ near its ends.

Discussion

1646.	A person moves 30m north then 20meast then 30root2 in south west his displacement is
Answer» A person moves 30m north then 20meast then 30root2 in south west his displacement is

Discussion

1647.	Define contact and non -contact forces. Give 3 examples of each.
Answer» Define contact and non -contact forces. Give 3 examples of each.

Discussion

1648.	Question 5The type of pollution which is likely to affect TajMahal in Agra to a greater extent is(a) Air pollution(b) Water pollution(c) Soil pollution(d) Noise pollution
Answer» Question 5 The type of pollution which is likely to affect TajMahal in Agra to a greater extent is (a) Air pollution (b) Water pollution (c) Soil pollution (d) Noise pollution

Discussion

1649.	A multiplexer has n data inputs, m control and one output. If m = 4, then n equals to ____16
Answer» A multiplexer has n data inputs, m control and one output. If m = 4, then n equals to ____ 16

Discussion

1650.	The best way to observe a solar eclipse is to ___ .
Answer» The best way to observe a solar eclipse is to ___ .

Discussion

Explore topic-wise InterviewSolutions in .

Why does the smaller magnet align itself in the direction of the bigger magnet?

33. If c be the speed of sound in air and c' be the RMS velocity then 1)c

1 gallen is equal to how many metres

If spinning speed of the earth is decreased then what will happen to the weight of the body at poles? And why is it so?

if the mass of a planet revolving around the sun is doubled and its frequency of revolution remains constant ,then radius of its orbit will be

The maximum distance through which a full dresses astronaut can jump on the earth is 0.5m. Estimate the maximum ventricle distance through which he can jump on the moon,which has a mean a density 2/3rd that of the earth and radius one quarter that of the earth.

नीचे दिए गए वाक्यों का पाठ के संदर्भ में अर्थ लिखिए-दक्खिन, पच्छिम, यक-सां, एक जुज, ढढ्ढे

what is friction

Compare the objects and choose the one with the correct symbol.

3 chares 4q,Q and q aer placed in a straight line of lrenlgth l at points 0, l/2and l dis†an ce away from one end respectively. what should be Q in order to make the net force on q to be zer

14. What is paramagnetic and diamagnetic property ?

ntA tree trunk of diameter 20 CM Lies in a horizontal field. A lazy grasshopper wants to jump over the trunk. Find the minimum take-off speed of grasshopper that will suffice.( air resistance is negligible).n

Which of the following is NOT a magnetic material?

What is meant by quantity? Give an example.

When will pluto and neptune hit each other (or smash into one another)?

The length of a linear rod is measured as 100.1cm.The approximate error in the measurement is

When at the south pole of the earth, the south pole of a magnet is brought near the north pole of a freely suspended magnetic needle, it will_____.

A ramp and a hill are examples of which simple machine?

A truck covers first 80 km in 2 hours, and the remaining 60 km in the next 3 hours. What is the average speed of the truck?

Which of the following depicts the usefulness of a machine?

What shape of a shadow will a birthday cap when light is from its left side?

The curved surface area of a hemisphere is 308 m2. Find the volume and the total surface area of hemisphere.

Which is the only planet that has water and air that supports life?

The wavelength of light coming from sodium source is 589 nm in air. What will be its wavelength in water?Refractive index of water is 1.33.

Where are the 5th state of matter BEC used?

Which of the following is a set of solid objects?

इकट्ठा किए हुए टिकटों का अलग-अलग तरह से वर्गीकरण किया जा सकता है। जैसे, देश के आधार पर। ऐसे और आधार सोचकर लिखो।

Show that when a Body is dropped from a height sum of its kinetic energy at any ins†an t during its fall is cons†an t.

What is the colour of the star named Rigel?

What happens when someone gets electrocuted

Suggest an activity to prepare a magnetic compass by using an iron needle and a bar magnet.

How can a point charge produce non uniform electric field?Is electric field due charge always non uniform

John wants to go to school on his bicycle. The grooves of his bicycle's tyres are worn out due to heavy use. Suggest the suitable path that he should take to avoid slipping.

The threads on a screw are an example of _______ .

State Right hand thumb rule.

Name the force applied in each of the following actions : No. Action Force applied 1. A bullock pulling a cart 2. A crane lifting a heavy iron load. 3. Weighing something on a spring balance. 4. Applying the brakes on a bicycle. 5. Picking up paper scraps with a plastic ruler.

Three metallic solid cubes whose edges are 3 cm, 4 cm and 5 cm are melted and formed into a single cube. Find the edge of the cube so formed.

58.What is the difference between asteroids and meteroids?

44.A body executes SHM under the action of F1 force with time period 0.8 s. If there force is changed to F2, it executes time period of 0.6 s. Now both F1 and F2 act simultaneously in the same direction. What is the new Periodic time?

The most common kind of iron nucleus has a mass number of 56. Find the radius of the nucleus. (Take R0=1.2×10−15 m:(56)13=3.82)

Paheli and Boojho observe a bright object in the night sky which was not twinkling. Paheli says, it is a star and Boojho says it is a planet. Who is correct? Do stars emit light only during night? [2 MARKS]

anacitor is charged to store an energy U. The chargingbatteryconnected to the first capacitor in parallel. The energy in eachof the capacitors is:(a) U/2(c) U42. Ais disconnected. An identical capacitor is now(AIPMT 2000)(b) 3U/2(d) U/4

Question 6 Fill in the blanks (i) When a bar magnet is broken; each of the broken part will have __ pole/poles. (ii) In a bar magnet, magnetic attraction is ____ near its ends.

A person moves 30m north then 20meast then 30root2 in south west his displacement is

Define contact and non -contact forces. Give 3 examples of each.

Question 5The type of pollution which is likely to affect TajMahal in Agra to a greater extent is(a) Air pollution(b) Water pollution(c) Soil pollution(d) Noise pollution

A multiplexer has n data inputs, m control and one output. If m = 4, then n equals to ____16

The best way to observe a solar eclipse is to ___ .

Question 6 Fill in the blanks (i) When a bar magnet is broken; each of the broken part will have pole/poles. (ii) In a bar magnet, magnetic attraction is __ near its ends.