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[#291] In case of a compound microscope, which of the following statements is/are correct? 1. The focal length of the eyepiece is larger than the focal length of the objective. 2. The focal length of the eyepiece is smaller than the focal length of the objective. 3. The image produced in a normal optical microscope is real. 4. The image produced in a normal optical microscope is virtual. Select the correct answer:

(A) Only 1

(B) 1 and 4

(C) 2 and 3

(D) 2 and 4

Correct Answer

(B) 1 and 4

[#292] Soap solution used for cleaning purpose appears cloudy. This is due to the fact that soap micelles can

(A) refract light

(B) scatter light

(C) diffract light

(D) polarise light

Correct Answer

(B) scatter light

[#293] Short sightedness is also called as . . . . . . . .

(A) Hypermetropia

(B) Myopia

(C) Ametropia

(D) Presbiopia

Correct Answer

(B) Myopia

[#294] A spherical mirror with reflective surface curved inward is called-

(A) concave mirror

(B) convex mirror

(C) plane mirror

(D) non of these

Correct Answer

(A) concave mirror

[#295] Which of the following phenomena is involved in Kaleidoscope?

(A) Refraction

(B) Reflection

(C) Total Internal Reflection

(D) Diffraction

Correct Answer

(B) Reflection