KCET 2021 Physics Answer Key – Karnataka Examinations Authority (KEA), has released the official KCET 2021 Physics Answer Key for version code A1, A2, A3, A4, A5, B1, B2, B3, B4, B5, C1, C2, C3, C4, C5. D1, D2, D3, D4, D5. Candidates can check the KCET 2021 Physics Answer Key on the official website i.e. cetonline.karnataka.gov.in or through the below direct link. The official KCET 2021 Physics Answer Key is categorized into 2 types i.e. provisional and final key. Candidates can estimate their probable score by adding 1 mark for each correct answer, there is no negative marking in KCET 2021. Scroll below to check out the steps to download KCET 2021 Answer Key, Types of Answer Key, how to raise objections for answer key, the difference between provisional and final answer key and how to calculate your score etc.
Latest – KCET 2021 official answer key for Physics has been released. Download the pdfs given below.
KCET 2021 Result – Details Here
Contents
KCET 2021 Physics Official Answer Key
Candidates can check the KCET 2021 official answer key for Physics from below direct link.
| Subject | Official Answer Key |
| Physics | Check Here |
Exam date – August 29, 2021
Release Date for Official Answer Key – 01 Sep 2021
Last date to Raise Objections – 04 Sep 2021 (5:30 pm)
Subject – Physics
KCET 2021 Physics Answer Key
The below-given questions and answers have been taken from various unofficial sources. Help us make this key better. Send your question paper at [email protected] or ginni@aglasem.in. Also, to get more questions and answers, keep on refreshing this page.
Ques. A 2 gram object located in a region of uniform electric field E = (300 NC-1) I carries a charge Q. The object released from the rest at x = 0, has a kinetic energy of 0.12J at x = 0.5m. Then Q is
Ques. Electric field due to infinite, straight uniformly charged wire varies with distance ‘r’ as
Ans. 1/r
Ques. A copper rod of the length of l is rotated about end A with a constant angular velocity ധ. The electric field at a distance x from the axis of rotation is
Ans. mω2x/e
Ques. To propagate both longitudinal and transverse waves, a material must have
Ans. shear and bulk modulus
Ques. A pendulum oscillates simple harmonically if and only if
(I) the size of the bob is pendulum is neglected in comparison with the length of the pendulum.
(II) the angular amplitude is less than 100
Ques. A gas mixture contains monoatomic and diatomic molecules of 2 moles each. The mixture has a total internal energy of
Ans. 8 RT
Ques. Two capillary tubes P and Q are dipped vertically in water. The height of the water level in the capillary tuned P is 2/3 of the height in the capillary tune Q. The ratio of their diameter is
Ans. 3:2
Ques. Two bodies of masses 8 kg are placed at the vertices A and B of an equilateral triangle ABC. A third body of mass 2 kg is placed at the centroid G of the triangle. If AG = BG = CG = 1m. Where should a fourth body of mass 4 kg be placed so that the resultant force on the 2 kg body is zero.
Ques. A ball hits the floor and rebounds after an inelastic collision. In this case
Ans. the total momentum of the ball and the earth is conserved
Ques. A 1 kg ball moving at 12 ms-1 collides with a 2 kg ball moving in the opposite direction at 24 ms-1. If the coefficient of restitution is 2/3, then their velocity after the collision are
Ans. -28 ms-1, −4 ms-1
Ques. A coin placed on a rotating turn table just slips. If it is placed at a distance of 4 cm from the center. If the angular velocity of the turn table is doubled, it will just slip at a distance of:
Ans. 1 cm
Ques. A particle starts from the rest. Its acceleration ‘a’ versus time ‘t’ is given in the figure. The maximum speed of particle will be.
Ans. 40 ms-1
Ques. Energy of an electron in the second orbit of a Hydrogen atom is E2. The energy of the electron in the third orbit of He+ will be
Ans. 16/9 E2
Ques. In a nuclear reactor heavy nuclei is not used as moderators because
Ans. Elastic collision f neutrons with heavy nuclei will not slow them down.
Ques. An electron in an excited state of Li2+ has angular momentum 3h/2π. The de-Broglie wavelength of electron in this state is Pπa0 (where a0 – Bohr’s radius). The value of P is
Ans. 2
Ques. Identify the incorrect statement.
(A) when a P-N junction diode is forward biased, the width of the depletion region decreases.
(B) when a P-N junction diode is reverse biased, the barrier potential increases.
(C) a photo diode is operated in the reverse bias.
(D) an LED is a light doped P-N junction which emits spontaneous radiation on forward biasing.
Ans. (D)
Ques. Three photodiodes D1, D2, D3 are made of semi-conductors having band gaps of 2.5eV, 2eC, and 3eV respectively. Which one will be able to detect light of wavelength 600nm?
Ans. D2 only
Ques. A particle starts from the origin at t = 0 with a velocity of 10j^ ms-1 and moves in the x-y plane with a constant acceleration of (8 i^ – 2 j^) ms-2. At an instant when the x-coordinate of the particle is 16 m, y coordinate of the particle is
Ans. 24m
Ques. The maximum range of a gun on a horizontal plane is 16 km. If g = 10 ms-2, then muzzle velocity of shell is
Ans. 400m/s
Ques. The trajectory of a projectile is
Ans. a parabola always
Ques. For a projectile motion, the angle between the velocity and acceleration is minimum and acute at
KCET 2021 Physics Answer Key by Base
Base Coaching institute releases KCET Physics answer key, once the exam is over. Check the physics answer key and solution given below.
| Institute | Solution | Answer Key | Analysis |
| BASE | Check here | Download here | Check here |
KCET 2021 Physics Answer Key by DR Academy
DR Academy has released KCET 2021 answer key for Physics. Download from the direct link given below.
| Institute | Answer Key / Solution |
| DR Academy | Download here |
How to Download KCET 2021 Physics Answer Key?
Candidates must ensure that they have a strong internet connection and compatible browser before downloading the KCET 2021 Physics Answer Key. The steps to do so are as follows.
1st step: First of all, you need to click on the above given link.
2nd step: Now, search for UGCET 2021 Temporary Answer Key and click on the link.
3rd step: After doing so, click on the Physics answer key specifically.
4th step: Now, the KCET 2021 Physics answer key appears on the screen in PDF format. Download it for future references.
How to Calculate score with KCET 2021 Physics Answer Key?
Candidates need 3 elements i.e. question paper, answer key, response sheet to calculate their scores in KCET 2021 Physics Answer Key. Candidates should note the challenge fee is not refundable.
1st step: First of all, curate KCET 2021 answer key, question paper and response sheet.
2nd step: Now, tally the answer key with the candidate response sheet.
3rd step: After that, calculate the raw score with the help of the following marking scheme.
- For correct answers: 1 mark is allotted
- For incorrect answers: Zero
4th step: At last, the raw marks is your probable score in the KCET 2021 examination.
Types of KCET 2021 Answer Key
Karnataka Examinations Authority (KEA), classifies the KCET 2021 answer key into 4 types. The following is the explanation of the same.
Official Answer Key: The KCET 2021 answer key is released on the official website i.e. cetonline.karnataka.gov.in. Candidates can object against the official answer key and also calculate the score with the help of it.
Unofficial Answer Key: The unofficial answer key is released by the subject experts and coaching centers. Candidates cannot challenge the unofficial answer key for KCET 2021.It is for reference purposes only.
Provisional Answer Key: KEA, releases the provisional answer key on the official website i.e. cetonline.karnataka.gov.in/kea. This is displayed just after the commencement of the KCET 2021 exam. If the applicants are not satisfied with the answer / question, they can object against the same.
Final Answer Key: After evaluation, the final answer key for KCET 2021 is released. Candidates cannot object against the same. The result is prepared for KCET, on the marks obtained in the final answer key.
KCET 2021 Question Paper
The KCET 2021 question paper is also released along with the answer key. It is displayed in the pdf format only. The question paper consists of the subject code, question numbers and marks allotted to each question. The KCET 2021 question paper can be used to tally the questions in the KCET 2021 answer key and response sheet.
KCET 2021 Response Sheet
The candidates can download the response sheet for KCET from the login of the applicants. They need to login with the CET application number and DOB to download the same. The response sheet is defined as an answer sheet where all the responses are mentioned by the candidate.
How to raise objections in KCET 2021 Physics Answer Key?
In case, the applicants are not satisfied with any question or answer given in KCET 2021 answer key, then they can raise their objection against the same. This can be done by filling an application form as and when available at cetonline.karnataka.gov.in/kea. They have to enter details like Subject, Version code, Question number, along with the documents supporting their claim to raise a challenge.
KCET 2021 Physics Answer Key Date
The KCET Physics Answer Key is usually released 3-4 days after the commencement of examination. The past year dates for the release of the provisional answer key are as follows.
| Year | Release of Provisional Answer Key |
| 2020 | 4 Aug 2020 |
| 2019 | 22 May 2019 |
| 2018 | 23 May 2018 |
| 2017 | 26 May 2017 |
FAQs for KCET 2021 Physics Answer Key
Ans 1. Candidates can download KCET 2021 Physics Answer Key in online mode.
Ans 2. Students can download KCET 2021 Physics Answer Key in PDF format.
Ans 3. You can download the KCET 2021 Physics Answer Key directly from this page.
Ans 4. No, you cannot challenge the KCET 2021 final answer key.
Ans 5. It is provided in PDF format.
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