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2201.

Which type of surfaces produces clear images?

Answer»

Which type of surfaces produces clear images?


2202.

a body start from rest from a point dis†an t 4R from the center of the earth.it reaches the surface of the earth whose radius is R the speed aquired by the body is

Answer» a body start from rest from a point dis†an t 4R from the center of the earth.it reaches the surface of the earth whose radius is R the speed aquired by the body is
2203.

विभिन्न व्यापारी अपने उत्पाद की बिक्री के लिए अनेक तरह के विज्ञापन बनाते हैं। आप भी हाथ से बनी किसी वस्तु की बिक्री के लिए एक ऐसा विज्ञापन बनाइए जिससे हस्तकला का कारोबार चले।

Answer»

विभिन्न व्यापारी अपने उत्पाद की बिक्री के लिए अनेक तरह के विज्ञापन बनाते हैं। आप भी हाथ से बनी किसी वस्तु की बिक्री के लिए एक ऐसा विज्ञापन बनाइए जिससे हस्तकला का कारोबार चले।

2204.

A hockey player is moving northward and suddenly turns westward with the samespeed to avoid an opponent. The force that acts on the player is:(a) frictional force along westward(b) muscle force along southward(C) friction force along the south-west(d) muscle force acting south-west

Answer» A hockey player is moving northward and suddenly turns westward with the same
speed to avoid an opponent. The force that acts on the player is:
(a) frictional force along westward
(b) muscle force along southward
(C) friction force along the south-west
(d) muscle force acting south-west
2205.

95.Three football A, B, C, were kicked from the same point in the same vertical plane simultaneously. Their trajectories are shown in the figure

Answer» 95.Three football A, B, C, were kicked from the same point in the same vertical plane simultaneously. Their trajectories are shown in the figure
2206.

Define simple machines with examples

Answer» Define simple machines with examples
2207.

Why does an arrow shoot forward when the stretched string of the bow is released?

Answer»

Why does an arrow shoot forward when the stretched string of the bow is released?

2208.

Planets are moving in cirrcular orbits around a star attracted by a force proportional to R^{n whereR=dis†an ce betweenthe panet and star. } The time perio d of revolution is found to be such thatT ^{2 } is proportional to R^{5/2 } . Then value of n=

Answer» Planets are moving in cirrcular orbits around a star attracted by a force proportional to R^{n whereR=dis†an ce betweenthe panet and star. } The time perio d of revolution is found to be such thatT ^{2 } is proportional to R^{5/2 } . Then value of n=
2209.

explain cross cannizaro mechanism

Answer» explain cross cannizaro mechanism
2210.

Question 4Compare and contrast fossil fuels and the Sun as direct sources of energy.

Answer» Question 4

Compare and contrast fossil fuels and the Sun as direct sources of energy.
2211.

how resis†an ce is generated in a circuit

Answer» how resis†an ce is generated in a circuit
2212.

Which of the following statements is TRUE?

Answer»

Which of the following statements is TRUE?


2213.

When two object slide against each other, the force that works against it is ____.

Answer»

When two object slide against each other, the force that works against it is ____.


2214.

A car is moving at a speed of 8 m/s. What will be the distance covered by the car in 10 seccond?

Answer»

A car is moving at a speed of 8 m/s. What will be the distance covered by the car in 10 seccond?

2215.

Thomas made a beautiful bookmark with the dimensions given below.The area of the bookmark is sq cm

Answer»

Thomas made a beautiful bookmark with the dimensions given below.







The area of the bookmark is sq cm

2216.

Question 7 (c)Identify the part which vibrates to produce sound in the following instrument.Flute

Answer»

Question 7 (c)

Identify the part which vibrates to produce sound in the following instrument.

Flute



2217.

Modes of transport are used to:

Answer»

Modes of transport are used to:


2218.

The length of the path travelled by a body is known as __________.

Answer»

The length of the path travelled by a body is known as __________.



2219.

Which of the following scenarios are the applications of an inclined plane?

Answer»

Which of the following scenarios are the applications of an inclined plane?



2220.

Find the area of the given figure.

Answer» Find the area of the given figure.


2221.

A lunar eclipse occurs when the(a) earth is between the sun and the moon.(b) moon is between the sun and the earth.(c) sun is between the earth and the moon.(d) in all the above situations

Answer» A lunar eclipse occurs when the

(a) earth is between the sun and the moon.

(b) moon is between the sun and the earth.

(c) sun is between the earth and the moon.

(d) in all the above situations
2222.

____________ is also known as an ON-OFF device

Answer»

____________ is also known as an ON-OFF device


2223.

Calculate the number of seconds in the month of February, 2020

Answer»

Calculate the number of seconds in the month of February, 2020


2224.

The least count of a stop watch is 0.2 second. The time of 20 oscillations of a pendulum is measured to be 25 seconds. The percentage error in the time period is

Answer» The least count of a stop watch is 0.2 second. The time of 20 oscillations of a pendulum is measured to be 25 seconds. The percentage error in the time period is
2225.

Which motion produces sound?

Answer» Which motion produces sound?
2226.

115.find flux through shaded area due to electric field given as

Answer» 115.find flux through shaded area due to electric field given as
2227.

An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line. What is the work done by the force of gravity on the object?

Answer» An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line. What is the work done by the force of gravity on the object?
2228.

What does the law make compulsory with respect to weights and measure?

Answer»

What does the law make compulsory with respect to weights and measure?

2229.

Define motion

Answer»

Define motion

2230.

Which of the following is/are the properties of light?

Answer»

Which of the following is/are the properties of light?


2231.

Give one example each of a class I lever where mechanical advantage is (a) more than 1, and (b) less than 1.

Answer»

Give one example each of a class I lever where mechanical advantage is (a) more than 1, and (b) less than 1.



2232.

निम्नलिखित प्रश्न का उत्तर एक-दो पंक्तियों में दीजिए −धर्म के व्यापार को रोकने के लिए क्या उद्योग होने चाहिए?

Answer»

निम्नलिखित प्रश्न का उत्तर एक-दो पंक्तियों में दीजिए


धर्म के व्यापार को रोकने के लिए क्या उद्योग होने चाहिए?

2233.

An electric cell stops working when __________.

Answer»

An electric cell stops working when __________.


2234.

Which are the different types of motion? Give two examples of each.

Answer»

Which are the different types of motion? Give two examples of each.

2235.

The length of a tube is 5643 mm. What would be its length when expressed in S.I. units?

Answer»

The length of a tube is 5643 mm. What would be its length when expressed in S.I. units?

2236.

The force required to do any work ................... due to slope.

Answer»

The force required to do any work ................... due to slope.


2237.

List down any four uses of magnets?

Answer» List down any four uses of magnets?
2238.

Write the uses of the following simple machines: Inclined plane Wedge Screw Wheel and axle

Answer» Write the uses of the following simple machines:

  1. Inclined plane

  2. Wedge

  3. Screw

  4. Wheel and axle



2239.

In which case can we use magnetic separation?

Answer» In which case can we use magnetic separation?
2240.

How many cubes of side 3 cms each can be cut from wooden block in the form of a cuboid whose length, breadth and height are 21 cm, 9 cm and 8 cm respectively? How much volume of wood is wasted?

Answer» How many cubes of side 3 cms each can be cut from wooden block in the form of a cuboid whose length, breadth and height are 21 cm, 9 cm and 8 cm respectively? How much volume of wood is wasted?
2241.

When the temperature of a body increases

Answer»

When the temperature of a body increases


2242.

50.Find the time period of torsional pendulum.

Answer» 50.Find the time period of torsional pendulum.
2243.

Explain why scissors for cutting cloth may have blades much longer than the handles, but shears for cutting metals have short blades and long handles.

Answer» Explain why scissors for cutting cloth may have blades much longer than the handles, but shears for cutting metals have short blades and long handles.
2244.

Which among the following objects can be used to measure a pen?

Answer»

Which among the following objects can be used to measure a pen?

2245.

How does static friction adjust itsel

Answer» How does static friction adjust itsel
2246.

Magnetic field at the centre of regular polygon of 'n' sides which is formed by wire, which carriescurrent I and side of polygon is 'a

Answer» Magnetic field at the centre of regular polygon of 'n' sides which is formed by wire, which carriescurrent I and side of polygon is 'a
2247.

Consider a glass cube slab of dielectric bound by the planes x 0, xa; y0, yb;z 0, z=c: with b> a > c. The slab is placed in air and has a refractive index of n. The minimumvalue for n such that all rays entering the dielectric at y- 0 reach y bis

Answer» Consider a glass cube slab of dielectric bound by the planes x 0, xa; y0, yb;z 0, z=c: with b> a > c. The slab is placed in air and has a refractive index of n. The minimumvalue for n such that all rays entering the dielectric at y- 0 reach y bis
2248.

what is net magnetic dipole moment when two similar magnets are joined in such a way that ones north with others sout

Answer» what is net magnetic dipole moment when two similar magnets are joined in such a way that ones north with others sout
2249.

Intermolecular forces are called as electrostatic forces or not

Answer» Intermolecular forces are called as electrostatic forces or not
2250.

Q74) The Himachal Pradesh Government launched the Rajiv Gandhi Illuminating Scheme for Hill Town Advancement (RISHTA) project. Consider the following statements. 1) It is an efficient smart solar power based street lighting project. 2) The scheme is also known as Centralized Control and Monitoring System (CCMS) Smart Street Lighting Scheme for Urban Local bodies which implements LED based street lighting project. 3) This project is being implemented by collaboration of state Urban Development Department and EESL (Energy Efficient Services Limited) Which of the statement(s) given above is/are correct?

Answer»

Q74) The Himachal Pradesh Government launched the Rajiv Gandhi Illuminating Scheme for Hill Town Advancement (RISHTA) project. Consider the following statements.

1) It is an efficient smart solar power based street lighting project.

2) The scheme is also known as Centralized Control and Monitoring System (CCMS) Smart Street Lighting Scheme for Urban Local bodies which implements LED based street lighting project.

3) This project is being implemented by collaboration of state Urban Development Department and EESL (Energy Efficient Services Limited)

Which of the statement(s) given above is/are correct?