Physics questions from ICSE - VIII exam.
Understand the Problem
The image contains several physics questions designed to test the understanding of concepts like mirrors, pressure, heat transfer, greenhouse gases, measurement errors, barometers, time reflection in mirrors, and identifying units. These are all likely part of a physics exam for ICSE - VIII (Indian Certificate of Secondary Education, Class 8).
Answer
Here are the answers to the multiple-choice questions: 1. (b) 3.6 m 2. (d) kgm-1s-2 3. (c) 11 4. (a) Only R 5. (c) CO2, CH4, CFCs 6. (a) Zero of the main scale is to the right of zero of Vernier scale 7. (d) 10000 cm 8. (a) 8:20 9. (a) amperes
Here are the answers to the multiple-choice questions:
- (b) 3.6 m
- (d) kgm-1s-2
- (c) 11
- (a) Only R
- (c) CO2, CH4, CFCs
- (a) Zero of the main scale is to the right of zero of Vernier scale
- (d) 10000 cm
- (a) 8:20
- (a) amperes
Answer for screen readers
Here are the answers to the multiple-choice questions:
- (b) 3.6 m
- (d) kgm-1s-2
- (c) 11
- (a) Only R
- (c) CO2, CH4, CFCs
- (a) Zero of the main scale is to the right of zero of Vernier scale
- (d) 10000 cm
- (a) 8:20
- (a) amperes
More Information
The answers were derived based on general physics knowledge. For question 1, the distance of the image from the mirror is the same as the object's distance. If Rani moves 20 cm (0.2 m) closer, she is 1.8 m from the mirror, so her image is also 1.8 m away, totaling 3.6 m. For question 3, the number of images formed by two mirrors inclined at an angle (\theta) is given by (n = \frac{360}{\theta} - 1). Thus, for an angle of 30 degrees, (n = \frac{360}{30} - 1 = 12 - 1 = 11).
AI-generated content may contain errors. Please verify critical information
