A. 1 cm B. 9cm C. 12cm D. 15cm Correct Answer: Option B B. 9cm Explanation v/u=hi/ho=60/20=hi/3 hi = 9cm
A. father below than it appears to be B. nearer than it appears to be C. found at exactly the…
A. real, erect and enlarged B. real, inverted and enlarged C. virtual, erect and diminished D. virtual, erect and enlarge…
A. 2.00m behind the mirror B. 2.00m in front of the mirror C. 1.25m in front of the mirror D.…
A. internal reflection B. refraction C. diffraction D. diffuse reflection Correct Answer: Option D D. diffuse reflection
A. through material without causing disturbance of the medium B. through space with constant speed C. in a direction parallel…
A. temperature is higher B. pressure is lower C. humidity is higher D. temperature is constant Correct Answer: Option B…
A. increase in the volume of steam inside it B. complete trapping of heat inside it C. increase in the…
A. 4.57 minutes B. 5.02 minutes C. 7.30 minutes D. 10.04 minutes Correct Answer: Option A A. 4.57 minutes
A. 20α B. 200α C. 2000α D. 20000α Correct Answer: Option A A. 20α Explanation L2−L1=α1(θ2−θ1)=α×0.5×40=20α