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Which unit can be used to measure energy? Given horsepower and kilocalorie 2025SPp1q9
Answer: Option A
Evan Toh
Sep 171 min read
Evan Toh
Sep 171 min read
What is the time taken to travel the distance d? 2025PPp1q4
Answer - Option D
Evan Toh
Sep 171 min read
What is the ratio of KE of car P to KE of car Q? 2025PPp1q14
Answer: Option C
Evan Toh
Sep 171 min read
Evan Toh
Sep 171 min read
In which process does the energy in the internal store of the substance increase? 2025PPp1q16
Answer: Option C
Evan Toh
Sep 161 min read
Evan Toh
Sep 161 min read
What is the resistance of wire W1 (Diameter of W1 is half of W2)
Answer: Option D
Evan Toh
Sep 161 min read
What is the nuclide notation of the isotope after an alpha and a beta emission? 2025PPp1q38
Answer: Option C
Evan Toh
Sep 161 min read
Light - Eyes assume light travels in a straight line. Locate the image after TIR
Answer: Option A The real ray that enters into our eyes due to total internal reflection (TIR) from object D. For TIR to occur, i > c and the light is travelling from an optically denser medium (water) towards a less dense medium (air). But to locate the image, the key concept here is to look at the last real ray. Our eyes and brain assume that light travels in a straight line, so we will assume the virtual image of the object is straight further down, extended from the last
Evan Toh
Sep 141 min read
What conditions will make the bulb brighter? (Pure)
Answer: Option A
Evan Toh
Aug 171 min read
Which pair of values could be X and Y in the potential divider if Vout is 10% of Vin? (Pure)
Answer: Option C
Evan Toh
Aug 171 min read
What happens to coil P (with slip rings) and coil Q (with split ring commutator)? (Pure)
Answer: Option C
Evan Toh
Aug 171 min read
Evan Toh
Aug 171 min read
As the coil of the DC motor turns, what are the differences in the turning effect? (Pure)
Answer: Option B As the coil of the DC motor turns, what are the differences in the turning effect?
Evan Toh
Aug 171 min read
What is the work done by the worker? Work done on the block? Express W in terms of P
Answer: Option A
Evan Toh
Aug 171 min read
What is the background radiation count rate?
Answers Option C
Evan Toh
Aug 171 min read
Mirror tilted 10o, what is the angle between the incident ray and the reflected ray?
Answer: Option D
Evan Toh
Aug 171 min read
Which displacement-time graph shows the particle X?
Answer: Option C
Evan Toh
Aug 171 min read
At which position is the image of the cat? Double mirror
Answer: Option D For double mirror question, image of the cat will be along the last real ray that enters into our eyes. We perceive that light travels in a straight line, so our brain will ‘think’ that the image is straight ahead. So in a way, the short cut to the answer is D. But view the video to learn and understand the concept.
Evan Toh
Aug 171 min read
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