S
Q) Which physical quantity is measured in Pascal?
Correct Answer - Option
(B)
Explanation :
Pressure is measured in pascals (Pa), where 1 Pa = 1 N/m².
22500+ Important MCQs for NDA
22500+ MCQs for NDA are available here. You can learn these questions for your better preparation. Questions are available with its correct answer. You can check the correct answer of any questions by clicking the option or show answer button.
Have a nice day and enjoy learning NDA MCQ Questions.
Learn NDA MCQs with answers [Page 3186 ]
S
Q) What happens to the frequency of a wave if its wavelength decreases and speed remains constant?
Correct Answer - Option
(A)
Explanation :
Since wave speed = frequency × wavelength, a decrease in wavelength means frequency must increase if speed is constant.
S
Q) Which of the following is a non-renewable source of energy?
Correct Answer - Option
(C)
Explanation :
Coal is a fossil fuel and non-renewable source of energy because it takes millions of years to form.
S
Q) Which mirror is used in car headlights?
Correct Answer - Option
(B)
Explanation :
Concave mirrors are used in headlights because they converge light rays into a strong, parallel beam.
S
Q) What type of lens is used to correct myopia (short-sightedness)?
Correct Answer - Option
(B)
Explanation :
A concave lens diverges light rays, helping the image form correctly on the retina for people with myopia.
S
Q) Which of the following is not a scalar quantity?
Correct Answer - Option
(B)
Explanation :
Velocity is a vector quantity because it has both magnitude and direction.
S
Q) Which instrument is used to measure electric current?
Correct Answer - Option
(B)
Explanation :
An ammeter measures electric current and is connected in series with the circuit.
S
Q) Who discovered the law of universal gravitation?
Correct Answer - Option
(B)
Explanation :
Sir Isaac Newton formulated the law of universal gravitation describing the attraction between two masses.
S
Q) Which property of light proves that it travels in a straight line?
Correct Answer - Option
(C)
Explanation :
Rectilinear propagation explains that light travels in straight lines, proven by the formation of shadows.
S
Q) Which of the following is an example of periodic motion?
Correct Answer - Option
(B)
Explanation :
A pendulum’s motion repeats at regular intervals, making it periodic motion.
Jump to