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3401.

In the given pictures, which one shows the correct sign positions?

Answer»

In the given pictures, which one shows the correct sign positions?


3402.

What type of machine we use to open the lid of a bottle?

Answer»

What type of machine we use to open the lid of a bottle?


3403.

What is oscillatory motion and vibratory motion

Answer»

What is oscillatory motion and vibratory motion

3404.

Justify: Repulsion is the surest test for magnetism.

Answer» Justify: Repulsion is the surest test for magnetism.
3405.

Are there poles in a circular magnet, are there poles on earth ?

Answer» Are there poles in a circular magnet, are there poles on earth ?
3406.

Three cubes whose edges are 3 cm,4 cm and 5 cm respectively are melted to form a single cube. Find the volume of the new cube.

Answer»

Three cubes whose edges are 3 cm,4 cm and 5 cm respectively are melted to form a single cube. Find the volume of the new cube.

3407.

Which of the following is an example of a simplest electric circuit?

Answer»

Which of the following is an example of a simplest electric circuit?


3408.

In Physics, energy is defined as:

Answer» In Physics, energy is defined as:
3409.

What is a clinical thermometer? What is the range of clinical thermometer? [2 MARKS]

Answer»

What is a clinical thermometer? What is the range of clinical thermometer? [2 MARKS]

3410.

A window consists of three sections I, II and III as shown below. Classify them as transparent, translucent and opaque.

Answer»

A window consists of three sections I, II and III as shown below.

Classify them as transparent, translucent and opaque.


3411.

The area of a rectangle of length 11 cm and width equal to half its length will be:

Answer»

The area of a rectangle of length 11 cm and width equal to half its length will be:

3412.

If the efficiency of a machine is 10 % and the work done on a machine is 2000 J, then what is the work done by the machine?

Answer»

If the efficiency of a machine is 10 % and the work done on a machine is 2000 J, then what is the work done by the machine?


3413.

What is the correct formula to determine the average speed?

Answer»

What is the correct formula to determine the average speed?

3414.

If a magnetic material is placed near a magnet it acquires magnetism. This type of magnetism is called___magnetism.

Answer»

If a magnetic material is placed near a magnet it acquires magnetism. This type of magnetism is called___magnetism.

3415.

Which of the following are non-contact forces?

Answer»

Which of the following are non-contact forces?


3416.

For a lever of third order, ___ is at the centre.

Answer»

For a lever of third order, ___ is at the centre.

3417.

What is meaning of accelerometer

Answer» What is meaning of accelerometer
3418.

How is the image formed in a pinhole camera

Answer» How is the image formed in a pinhole camera
3419.

Consider the following statements and choose the correct option. 1. Magnetic field lines form closed loops. 2. No two field lines intersect.

Answer»

Consider the following statements and choose the correct option.
1. Magnetic field lines form closed loops.
2. No two field lines intersect.

3420.

Measurements are important for life . Why ????

Answer» Measurements are important for life . Why ????
3421.

\N

Answer»

\N

3422.

Which of the following isotope is used for the nuclear fission in a nuclear reactor?

Answer»

Which of the following isotope is used for the nuclear fission in a nuclear reactor?


3423.

What are the various types of motion? Give examples for each.

Answer» What are the various types of motion? Give examples for each.
3424.

Which among the following allows electrons to flow freely?

Answer»

Which among the following allows electrons to flow freely?


3425.

The force applied by means of a machine is known as:

Answer»

The force applied by means of a machine is known as:

3426.

Calculate the number of oscillations a simple pendulum does in 2 minutes if its time period is 0.5 s.

Answer»

Calculate the number of oscillations a simple pendulum does in 2 minutes if its time period is 0.5 s.


3427.

The area of a rectangular piece of a board is 36 cm2. If the width is 4 cm of the length, what is the width of the board?

Answer»

The area of a rectangular piece of a board is 36 cm2. If the width is 4 cm of the length, what is the width of the board?


3428.

Kavita was taking out water from the well using a bucket. Which of the given action(s) must be performed by Kavita?

Answer»

Kavita was taking out water from the well using a bucket. Which of the given action(s) must be performed by Kavita?


3429.

In min max thermometer what is range of temperature

Answer» In min max thermometer what is range of temperature
3430.

Read carefully the statements given below and choose the correct option accordingly. Statement 1: Paper is a poor conductor of electricity Statement 2: Filament of a bulb is a thick wire Statement 3: Electric circuit can work without electric cell Statement 4: The direction of electric current is from positive terminal to negative terminal

Answer»

Read carefully the statements given below and choose the correct option accordingly. Statement 1: Paper is a poor conductor of electricity Statement 2: Filament of a bulb is a thick wire Statement 3: Electric circuit can work without electric cell Statement 4: The direction of electric current is from positive terminal to negative terminal

3431.

What are contact forces?

Answer»

What are contact forces?


3432.

Which of the following is/are examples of Non-contact force?

Answer»

Which of the following is/are examples of Non-contact force?


3433.

The relationship between electricity and magnetism was first discovered in which of the following pairs?

Answer» The relationship between electricity and magnetism was first discovered in which of the following pairs?
3434.

Where do we find iron filex

Answer» Where do we find iron filex
3435.

List down the properties of a magnet.

Answer» List down the properties of a magnet.
3436.

In an electric circuit, the direction of current is taken to be from the _____________ terminal of the electric cell

Answer»

In an electric circuit, the direction of current is taken to be from the _____________ terminal of the electric cell


3437.

In order to cover a certain distance in a shorter time, the object should have a greater:

Answer»

In order to cover a certain distance in a shorter time, the object should have a greater:


3438.

You must have heard the story of Newton discovering gravity by watching an apple falling from a tree. Before discovering gravity, he must have given a thought on what kind of motion the apple underwent. So, the apple underwent ________ motion.

Answer»

You must have heard the story of Newton discovering gravity by watching an apple falling from a tree. Before discovering gravity, he must have given a thought on what kind of motion the apple underwent. So, the apple underwent ________ motion.


3439.

The occurrence of day and night suggests that

Answer»

The occurrence of day and night suggests that


3440.

___ is the force applied in order to lift the load.

Answer»

___ is the force applied in order to lift the load.

3441.

नीचे दी गई जानकारी को पढ़िये और इसके आगे आने वाले प्रश्नों के उत्तर दीजिए। एक थैले में 4 लाल, 4 हरी और 4 नीली गेंदें हैं। बिना बदले दो गेदों को यादृच्छिक रूप से निकाला जाता है। Q. एक गेंद नीली और दूसरी हरी होने की प्रायिकता क्या है?

Answer»

नीचे दी गई जानकारी को पढ़िये और इसके आगे आने वाले प्रश्नों के उत्तर दीजिए।
एक थैले में 4 लाल, 4 हरी और 4 नीली गेंदें हैं।
बिना बदले दो गेदों को यादृच्छिक रूप से निकाला जाता है।

Q. एक गेंद नीली और दूसरी हरी होने की प्रायिकता क्या है?


3442.

Can electricity flow through a rubber tube?

Answer» Can electricity flow through a rubber tube?
3443.

What is definition of insulator and conductor

Answer»

What is definition of insulator and conductor

3444.

What is phase wire?What is the function of phase wire and neutral wire?

Answer»

What is phase wire?What is the function of phase wire and neutral wire?

3445.

A car covers a distance of 300 m in 20 seconds. Calculate the speed of the car.

Answer»

A car covers a distance of 300 m in 20 seconds. Calculate the speed of the car.

3446.

A motion that repeats itself after equal intervals of time is known as___motion.

Answer»

A motion that repeats itself after equal intervals of time is known as___motion.

3447.

Is static friction greater than rolling friction? ​​​

Answer»

Is static friction greater than rolling friction?

​​​

3448.

Why is Mercury only visible before sunrise or just after sunset? [2 MARKS]

Answer»

Why is Mercury only visible before sunrise or just after sunset? [2 MARKS]

3449.

What are the main components of an electric circuit? Why are metal wires used in electric circuits? [3 MARKS]

Answer»

What are the main components of an electric circuit? Why are metal wires used in electric circuits? [3 MARKS]

3450.

If the speed of light is equal to 3×108ms−1, how many kilometers will make up 1 light year?

Answer»

If the speed of light is equal to 3×108ms1, how many kilometers will make up 1 light year?