Q. What happens to the frequency of a damped oscillator as damping increases?
A.
Frequency increases
B.
Frequency decreases
C.
Frequency remains the same
D.
Frequency becomes zero
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Solution
As damping increases, the frequency of the damped oscillator decreases.
Correct Answer: B — Frequency decreases
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Q. What happens to the frequency of oscillation in a damped system compared to an undamped system?
A.
It increases
B.
It decreases
C.
It remains the same
D.
It becomes zero
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Solution
The frequency of oscillation in a damped system is lower than that of an undamped system due to energy loss.
Correct Answer: B — It decreases
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Q. What happens to the fringe pattern in Young's double-slit experiment if the distance to the screen is halved?
A.
Fringe width increases
B.
Fringe width decreases
C.
Fringe separation remains the same
D.
Fringe visibility decreases
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Solution
Fringe width (β) is inversely proportional to the distance to the screen (D). If D is halved, the fringe width decreases.
Correct Answer: B — Fringe width decreases
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Q. What happens to the galvanometer reading in a Wheatstone bridge when it is balanced?
A.
It shows maximum current
B.
It shows minimum current
C.
It shows zero current
D.
It shows fluctuating current
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Solution
When the Wheatstone bridge is balanced, the potential difference across the galvanometer is zero, resulting in zero current.
Correct Answer: C — It shows zero current
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Q. What happens to the gravitational force between two masses if one mass is tripled?
A.
It triples
B.
It doubles
C.
It remains the same
D.
It increases by a factor of 9
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Solution
The gravitational force is directly proportional to the product of the masses. If one mass is tripled, the force also triples.
Correct Answer: A — It triples
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Q. What happens to the gravitational force between two masses if the distance between them is tripled?
A.
It triples
B.
It becomes one-third
C.
It becomes one-ninth
D.
It remains the same
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Solution
The gravitational force is inversely proportional to the square of the distance. If the distance is tripled, the force becomes 1/(3^2) = 1/9 of the original force.
Correct Answer: C — It becomes one-ninth
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Q. What happens to the gravitational force between two objects if one object's mass is tripled?
A.
It triples
B.
It halves
C.
It remains the same
D.
It increases by a factor of 9
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Solution
The gravitational force is directly proportional to the product of the masses. If one mass is tripled, the force also triples.
Correct Answer: A — It triples
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Q. What happens to the gravitational force between two objects if the mass of one object is tripled?
A.
It becomes three times stronger
B.
It becomes six times stronger
C.
It becomes nine times stronger
D.
It remains the same
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Solution
The gravitational force is directly proportional to the product of the masses, so tripling one mass triples the force.
Correct Answer: A — It becomes three times stronger
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Q. What happens to the gravitational force if the mass of one object is tripled?
A.
It becomes three times stronger
B.
It becomes six times stronger
C.
It remains the same
D.
It becomes nine times stronger
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Solution
The gravitational force is directly proportional to the product of the masses, so tripling one mass triples the force.
Correct Answer: A — It becomes three times stronger
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Q. What happens to the gravitational force on a satellite as it moves further away from the Earth?
A.
It increases
B.
It decreases
C.
It remains constant
D.
It becomes zero
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Solution
The gravitational force on a satellite decreases as it moves further away from the Earth, following the inverse square law.
Correct Answer: B — It decreases
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Q. What happens to the gravitational force on a satellite as it moves to a higher orbit?
A.
It increases.
B.
It decreases.
C.
It remains constant.
D.
It becomes zero.
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Solution
The gravitational force on a satellite decreases as it moves to a higher orbit due to the inverse square law of gravitation.
Correct Answer: B — It decreases.
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Q. What happens to the gravitational force on a satellite if its altitude is doubled?
A.
It doubles
B.
It remains the same
C.
It becomes four times weaker
D.
It becomes eight times weaker
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Solution
The gravitational force decreases with the square of the distance from the center of the Earth. If the altitude is doubled, the distance from the center of the Earth becomes R + 2h, and the force becomes weaker by a factor of four.
Correct Answer: C — It becomes four times weaker
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Q. What happens to the gravitational potential as you move away from a mass?
A.
It increases
B.
It decreases
C.
It remains constant
D.
It oscillates
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Solution
The gravitational potential decreases as you move away from a mass.
Correct Answer: B — It decreases
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Q. What happens to the gravitational potential as you move away from a massive body?
A.
It increases
B.
It decreases
C.
It remains constant
D.
It oscillates
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Solution
The gravitational potential decreases as you move away from a massive body.
Correct Answer: B — It decreases
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Q. What happens to the gravitational potential energy of a satellite as it moves further away from the Earth?
A.
It increases
B.
It decreases
C.
It remains constant
D.
It becomes zero
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Solution
As a satellite moves further away from the Earth, its gravitational potential energy increases because it is moving to a higher potential.
Correct Answer: A — It increases
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Q. What happens to the gravitational potential energy of a satellite as it moves to a higher orbit?
A.
It increases
B.
It decreases
C.
It remains constant
D.
It becomes zero
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Solution
As a satellite moves to a higher orbit, its gravitational potential energy increases due to the increase in distance from the Earth.
Correct Answer: A — It increases
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Q. What happens to the gravitational potential energy of an object as it moves away from a planet?
A.
It increases.
B.
It decreases.
C.
It remains constant.
D.
It becomes zero.
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Solution
As an object moves away from a planet, its gravitational potential energy increases (becomes less negative).
Correct Answer: A — It increases.
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Q. What happens to the gravitational potential energy of an object as it moves away from the Earth?
A.
It increases.
B.
It decreases.
C.
It remains constant.
D.
It becomes zero.
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Solution
As an object moves away from the Earth, its gravitational potential energy increases.
Correct Answer: A — It increases.
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Q. What happens to the image distance when the object distance is increased in a convex lens? (2022)
A.
Image distance decreases
B.
Image distance increases
C.
Image distance remains the same
D.
Image distance becomes negative
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Solution
As the object distance increases in a convex lens, the image distance also increases, moving further away from the lens.
Correct Answer: B — Image distance increases
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Q. What happens to the image distance when the object is moved closer to a concave mirror? (2021)
A.
Increases
B.
Decreases
C.
Remains the same
D.
Becomes negative
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Solution
As the object moves closer to a concave mirror, the image distance increases, and the image becomes larger and more distant.
Correct Answer: A — Increases
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Q. What happens to the image distance when the object is moved closer to a convex lens beyond its focal point?
A.
Increases
B.
Decreases
C.
Remains the same
D.
Becomes negative
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Solution
As the object moves closer, the image distance increases.
Correct Answer: A — Increases
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Q. What happens to the image formed by a concave lens when the object is placed at infinity?
A.
Real and inverted
B.
Virtual and upright
C.
Real and upright
D.
No image formed
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Solution
When an object is placed at infinity, a concave lens forms a virtual image at its focal point, which is upright.
Correct Answer: B — Virtual and upright
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Q. What happens to the image formed by a concave mirror when the object is placed at the center of curvature?
A.
The image is virtual and upright.
B.
The image is real and inverted.
C.
The image is real and upright.
D.
The image is virtual and inverted.
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Solution
When the object is at the center of curvature, the image formed is real, inverted, and of the same size.
Correct Answer: B — The image is real and inverted.
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Q. What happens to the image formed by a concave mirror when the object is placed between the focal point and the mirror?
A.
The image is real and inverted.
B.
The image is virtual and upright.
C.
The image is real and upright.
D.
No image is formed.
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Solution
When the object is placed between the focal point and the mirror, the image formed is virtual and upright.
Correct Answer: B — The image is virtual and upright.
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Q. What happens to the image formed by a convex lens when the object is moved closer to the lens than its focal length?
A.
Image disappears
B.
Image becomes real
C.
Image becomes virtual
D.
Image becomes inverted
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Solution
When the object is within the focal length of a convex lens, the image formed is virtual and upright.
Correct Answer: C — Image becomes virtual
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Q. What happens to the image formed by a convex lens when the object is placed at a distance greater than twice the focal length? (2022)
A.
Virtual and erect
B.
Real and inverted
C.
Real and erect
D.
Virtual and inverted
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Solution
When the object is placed beyond twice the focal length, the image formed is real, inverted, and smaller than the object.
Correct Answer: B — Real and inverted
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Q. What happens to the image when an object is moved closer to a convex lens than its focal length? (2019)
A.
Real and inverted
B.
Virtual and erect
C.
Real and erect
D.
Virtual and inverted
Show solution
Solution
When the object is placed within the focal length of a convex lens, the image formed is virtual and erect.
Correct Answer: B — Virtual and erect
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Q. What happens to the image when the object is moved closer to a convex lens than its focal length?
A.
Image disappears
B.
Image becomes real
C.
Image becomes virtual
D.
Image becomes inverted
Show solution
Solution
When the object is within the focal length of a convex lens, the image formed is virtual.
Correct Answer: C — Image becomes virtual
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Q. What happens to the induced current if the magnetic field is suddenly removed from a coil? (2022)
A.
It continues to flow
B.
It stops immediately
C.
It increases
D.
It decreases gradually
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Solution
If the magnetic field is suddenly removed, the change in magnetic flux becomes zero, leading to an immediate stop in the induced current.
Correct Answer: B — It stops immediately
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Q. What happens to the induced current in a closed loop if the magnetic field through the loop is increasing?
A.
The induced current flows in a direction to oppose the increase
B.
The induced current flows in the same direction as the increase
C.
The induced current becomes zero
D.
The induced current fluctuates
Show solution
Solution
According to Lenz's law, the induced current will flow in a direction that opposes the increase in magnetic flux.
Correct Answer: A — The induced current flows in a direction to oppose the increase
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