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DDU Entrance exam Syllabus. We covered all the DDU Entrance exam Syllabus mcqs in this post for free so that you can practice well for the exam.
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DDU Objective Entrance exam Syllabus for Students
A circular coil of radius R with N turns carries a steady current I. The magnetic field at its center is 0.1 tesla. If the number of turns is increased to 2N and the radius is reduced to R/2, what will be the new magnetic field at the center?
(A) 0.05 tesla
(B) 0.2 tesla
(C) 0.4 tesla
(D) 0.8 tesla
Option c – 0.4 tesla
Which of the following correctly states the law of conservation of Mass?
(A) A chemical compound always has its constituent elements in a fixed ratio
(B) Gases combine in simple whole-number ratios by volume under identical conditions
(C) Matter is neither created nor destroyed during a chemical reaction
(D) Equal volumes of gases at the same temperature and pressure contain the same number of molecules
Option c – Matter is neither created nor destroyed during a chemical reaction
Which instrument is commonly used to detect and measure radioactivity?
(A) GM counter
(B) Polarimeter
(C) Calorimeter
(D) Colorimeter
Option a – GM counter
A convex lens has a focal length of 50 cm. What is the power of this lens?
(A) +2 dioptre
(B) +0.02 dioptre
(C) −0.5 dioptre
(D) +0.5 dioptre
Option a – +2 dioptre
The emission of electrons from a metal surface when Light falls on it is called
(A) Thermionic emission
(B) Photoelectric emission
(C) Field emission
(D) Autoelectronic emission
Option b – Photoelectric emission
An object is placed in front of a convex mirror. Which of the following statements is correct?
(A) The mirror never produces an inverted image
(B) As the object approaches the mirror, the image shifts toward the focus
(C) The mirror can form a real and inverted image depending on object position
(D) The image becomes larger than the object when placed at half the focal length
Option a – The mirror never produces an inverted image
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