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Science MCQ Questions with answers

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Learn Science MCQs [Page 4 ]

Praveen Singh • 16.63K Points
Tutor I

Q) Assuming the earth to be a sphere of uniform mass density, how much would body weight half way down to the centre of earth if it weighed 250 N on the surface ?

(A) 175 N

(B) 125 N

(D) 200 N

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Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

Praveen Singh • 16.63K Points
Tutor I

Q) Electric Potential is :

(A) Vector and dimensionless quantity

(B) Scalar and dimensional quantity

(D) Scalar and dimensionless quantity

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Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

Praveen Singh • 16.63K Points
Tutor I

Q) Calculate the number of atoms in 39.4 g gold. Molar mass of gold is 197g/mol:

(A) 1.20×10²³ atoms

(B) 1.5×10²³ atoms

(D) None of the above

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Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

Upesh • 108 Points
Mover

Q) Which type of waves used by radar for detecting the presence of aircraft?

(A) Radio wave

(B) Sound wave

(D) Ultrasonic wave

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Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

Praveen Singh • 16.63K Points
Tutor I

Q) Find the linear momentum of a photon of energy 6 × 10^-20 J.

(A) 2.5 × 10^-28 kg ms-1

(B) 2 × 10^28 kg ms-1

(D) None of the above

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Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

Praveen Singh • 16.63K Points
Tutor I

Q) A gold leaf electroscope is charged and the leaves are observed to diverge by a certain amount. The beam of X-rays is allowed to fall upon the electroscope for a short period. The effect is as follows :

(A) The golf leaves will melt

(B) The leaves will diverge further

(D) The leaves will collapse

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Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

Praveen Singh • 16.63K Points
Tutor I

Q) If the magnetic flux linked with a coil varies at the rate of 1 Wb/min, the induced e.m.f. Is :

(A) 1 v

(B) 60 v

(D) None of the above

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Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

Praveen Singh • 16.63K Points
Tutor I

Q) The time period of a satellite revolving in a circular path of radius R is T. the time period of the satellite of radius 9 R will be :

(A) T

(B) 9T

(D) T/9

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Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

Praveen Singh • 16.63K Points
Tutor I

Q) Conduction, is the process of heat transfer in which :

(A) Heated molecules move from hotter to colder region

(B) A heated fluid flows from heated to colder region

(D) Heat passes from one particle to other as a result of increased vibration.

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Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

Praveen Singh • 16.63K Points
Tutor I

Q) Four beats per second are heard in a gas when two waves of wavelength 1.0 m and 1.01 m are passed in it. The speed of sound in the gas will be :

(A) 440 m/s

(B) 360 m/s

(D) 980 m/s

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Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

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Science MCQ Questions with answers

Learn Science MCQs [Page 4 ]

Q) Assuming the earth to be a sphere of uniform mass density, how much would body weight half way down to the centre of earth if it weighed 250 N on the surface ?

Q) Electric Potential is :

Q) Calculate the number of atoms in 39.4 g gold. Molar mass of gold is 197g/mol:

Q) Which type of waves used by radar for detecting the presence of aircraft?

Q) Find the linear momentum of a photon of energy 6 × 10^-20 J.

Q) A gold leaf electroscope is charged and the leaves are observed to diverge by a certain amount. The beam of X-rays is allowed to fall upon the electroscope for a short period. The effect is as follows :

Q) If the magnetic flux linked with a coil varies at the rate of 1 Wb/min, the induced e.m.f. Is :

Q) The time period of a satellite revolving in a circular path of radius R is T. the time period of the satellite of radius 9 R will be :

Q) Conduction, is the process of heat transfer in which :

Q) Four beats per second are heard in a gas when two waves of wavelength 1.0 m and 1.01 m are passed in it. The speed of sound in the gas will be :

Select Subject

Attempt 200+ Quizzes on Science

Choose Examination

Science MCQ Questions with answers

Learn Science MCQs [Page 4 ]

Q) Assuming the earth to be a sphere of uniform mass density, how much would body weight half way down to the centre of earth if it weighed 250 N on the surface ?

Q) Electric Potential is :

Q) Calculate the number of atoms in 39.4 g gold. Molar mass of gold is 197g/mol:

Q) Which type of waves used by radar for detecting the presence of aircraft?

Q) Find the linear momentum of a photon of energy 6 × 10^-20 J.

Q) A gold leaf electroscope is charged and the leaves are observed to diverge by a certain amount. The beam of X-rays is allowed to fall upon the electroscope for a short period. The effect is as follows :

Q) If the magnetic flux linked with a coil varies at the rate of 1 Wb/min, the induced e.m.f. Is :

Q) The time period of a satellite revolving in a circular path of radius R is T. the time period of the satellite of radius 9 R will be :

Q) Conduction, is the process of heat transfer in which :

Q) Four beats per second are heard in a gas when two waves of wavelength 1.0 m and 1.01 m are passed in it. The speed of sound in the gas will be :

Select Subject

Attempt 200+ Quizzes on Science

Choose Examination

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