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Rajasthan SI — Physics (light, electricity) MCQs

Practice 20 free physics (light, electricity) multiple choice questions for Rajasthan SI exam. Instant answers with explanations in Hindi and English.

Master Physics (light, electricity) under Basic Science for Rajasthan SI with our curated MCQ set. Every question follows real Rajasthan exam patterns. Switch between Hindi and English anytime.

Rajasthan SI — Basic Science — Physics (light, electricity)

20 Questions • Instant results & explanations • Hindi & English

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Question 1 of 20

Consider the following statements regarding the scattering of light: 1. Shorter wavelengths scatter less efficiently than longer wavelengths. 2. The red color of sunrise is due to the scattering away of blue light. Which of the statements is/are correct?

Question 2 of 20

Assertion (A): Electromagnets are utilized in essential medical imaging equipment like MRI machines. Reason (R): Electromagnets act as temporary magnets because they are constructed using materials with low retentivity, allowing their powerful magnetic fields to be turned on and off immediately using an electric current.

Question 3 of 20

Match List-I (Device) with List-II (Energy Conversion) and select the correct answer using the codes given below: List-I a. Electric Motor b. Electric Generator c. Solar Cell d. Battery List-II 1. Chemical to Electrical 2. Light to Electrical 3. Mechanical to Electrical 4. Electrical to Mechanical

Question 4 of 20

Which of the following topics is explicitly studied under the branch of 'Modern Physics'?

Question 5 of 20

Which of the following optical instruments functions primarily on the principle of multiple image formation using angled mirrors?

Question 6 of 20

What primary limitation makes a plane mirror less effective than a convex mirror for vehicular rear-view applications?

Question 7 of 20

What is the scientific term for the optical phenomenon where white light splits into its constituent seven colors (VIBGYOR) upon passing through a transparent medium like a prism?

Question 8 of 20

Consider the following statements regarding lenses: I. A convex lens can form both real and virtual images. II. A concave lens diverges light rays. Which of the above statements is/are correct?

Question 9 of 20

According to the Cartesian sign convention used in optics, how are distances measured against the direction of incident light treated?

Question 10 of 20

Hypermetropia is a refractive defect of the eye where close objects cannot be brought into sharp focus because the focal point lies behind the retina. This condition is successfully managed by prescribing a:

Question 11 of 20

The speed of light is internationally quantified as approximately 3 x 10^8 m/s. In which medium does light achieve this maximum possible speed?

Question 12 of 20

Electricity can manifest as either static or current. Which of the following choices accurately identifies a major natural event driven by static electricity, alongside its physical explanation?

Question 13 of 20

If the formula for linear magnification is given as $m = -v/u = h_i/h_o$, what specific conclusion can a physicist draw if the calculated mathematical value of 'm' turns out to be a positive number?

Question 14 of 20

What is the primary physical cause responsible for the optical phenomenon known as refraction when light shifts between different transparent media?

Question 15 of 20

To rectify the optical distortion caused by Astigmatism, which specialized type of lens is utilized?

Question 16 of 20

Identify the primary disadvantage of connecting multiple household appliances in a series circuit.

Question 17 of 20

According to Snell's Law of refraction, the ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant. This constant specifically depends on which of the following factors?

Question 18 of 20

Which of the following statements correctly identifies the standard color coding used for household electrical wiring?

Question 19 of 20

What is the SI unit of the power of a lens?

Question 20 of 20

Assertion (A): X-rays are highly effective for mapping the intricate soft tissue networks within the human brain. Reason (R): X-rays consist of high-frequency electromagnetic waves that are primarily absorbed by dense structures.

More Basic Science Subtopics

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