How many questions does AceMRCOG have?

AceMRCOG has 1,750 expertly curated MRCOG Part 1 SBA questions across all 14 subjects including Physiology, Pharmacology, Microbiology, Genetics, Pathology, Anatomy, Statistics, Immunology, Biochemistry, Endocrinology, Biophysics, Neonatology, Clinical Management and Embryology.

Yes. AceMRCOG offers a free plan with 50 questions — no credit card required. Paid plans unlock all 1,750 questions, timed mock tests, detailed explanations and performance analytics.

Does AceMRCOG have mock tests?

Yes. Paid plans include full timed mock tests that simulate the real MRCOG Part 1 exam format. Each mock has 100 questions with a 90-minute timer, matching the actual exam conditions.

What is the MRCOG Part 1 pass rate?

The MRCOG Part 1 first-attempt pass rate is approximately 40-50%. Candidates who practice at least 1,500 questions and complete multiple timed mock tests significantly improve their chances of passing on the first attempt.

How long should I study for MRCOG Part 1?

Most successful candidates study for 3-6 months. If working clinically, 3 months with 1.5-2 hours of daily structured study and daily question practice is achievable. The key is consistent question practice — at least 30 questions per day.

What subjects are tested in MRCOG Part 1?

MRCOG Part 1 tests 14 subjects: Physiology, Pharmacology, Microbiology, Genetics, Pathology, Anatomy, Statistics & Epidemiology, Immunology, Biochemistry, Endocrinology, Biophysics, Neonatology, Clinical Management and Embryology.

When is the MRCOG Part 1 exam held?

The MRCOG Part 1 exam is held twice a year — typically in March and September. Exact dates are published by the RCOG on their official website. Registration usually opens 3-4 months before the exam date.

MRCOG Part 1 Subject Guide

MRCOG Part 1: Biophysics

~40 questionsLower priority

Biophysics is one of the lower-weighting subjects with approximately 40 questions. It covers the physical principles underlying imaging and clinical measurement techniques used in obstetrics and gynaecology, particularly ultrasound physics.

Topics Covered

Ultrasound Physics

›Sound wave properties — frequency, wavelength, speed (1,540 m/s in soft tissue)
›Piezoelectric effect — how transducers generate and detect ultrasound
›Acoustic impedance and reflection — difference between tissues determines image contrast
›Resolution — axial vs lateral resolution; higher frequency = better resolution but less penetration
›Doppler ultrasound — continuous wave vs pulsed wave, colour Doppler
›Artefacts — shadowing, enhancement, reverberation, aliasing in colour Doppler
›Safety — thermal and mechanical (cavitation) effects; ALARA principle

Radiation Biology

›Ionising vs non-ionising radiation
›X-ray production and interactions — photoelectric effect, Compton scattering
›Radiation dose — Gray (absorbed dose), Sievert (effective dose, accounts for tissue sensitivity)
›Fetal radiation sensitivity — organogenesis period most sensitive
›Radiation protection — time, distance, shielding; inverse square law

Clinical Measurement

›Blood pressure measurement — Korotkoff sounds, errors in measurement
›Pulse oximetry — principle (differential absorption of oxyhaemoglobin vs deoxyhaemoglobin)
›CTG interpretation — principles of fetal heart rate monitoring
›Measurement error — systematic vs random error, precision vs accuracy
›SI units — key units for clinical measurements in O&G

Exam Tips for Biophysics

Ultrasound frequency vs penetration trade-off is the most tested biophysics concept: higher frequency = better resolution but less penetration.

Know the ultrasound speed in soft tissue (1,540 m/s) — this is used to calculate distance from echo return time.

Radiation dose units: Gray = absorbed dose (energy per kg); Sievert = effective dose (accounts for biological effect of radiation type and tissue sensitivity).

Pulse oximetry principle: oxyhaemoglobin absorbs more infrared light; deoxyhaemoglobin absorbs more red light.

This is a scoring subject — the same concepts appear repeatedly. Learn them once.

Recommended Book

✓ Physics for Medical Imaging (Farr & Allisy-Roberts) or ultrasound physics textbooks used in radiology.

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AceMRCOG has 40 Biophysics SBA questions with detailed explanations. Start with 50 questions free — no credit card needed.

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Related Subjects

Statistics & Epidemiology

~75 questions

Anatomy

~85 questions

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