Related Questions

Which of the following statements about optical microscope is/are correct? 1. Both the eyepiece and objective of a microscope are convex lenses. 2. The magnification of a microscope increases with increase in focal length of the objective. 3.The magnification of a microscope depends upon the length of the microscope tube. 4. The eyepiece of a microscope is a concave lens. Select the correct answer using the code given below:
Which of the following statements about optical microscope is/are correct?
1. Both the eyepiece and objective of a microscope are convex lenses.
2. The magnification of a microscope increases with increases in focal length of the objective.
3. The magnification of a microscope depends upon the length of the microscope tube.
4. The eyepiece of a microscope is a concave lens.
Select the correct answer:
In case of compound microscope which of the following statements is/are correct? 1) The focal length of eye piece is larger than the focal length of the objective 2) The focal length of the eye piece 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
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:
The 2018 Nobel Prize in Physics has been awarded in laser physics for the optical tweezers and their applications to biological systems for the method of generating high-intensity, ultra-short optical pulses. Which of the following verifies the given statement? I:  The 2018 Nobel Prize in Physics has been awarded in laser physics for the optical tweezers. II: The 2018 Nobel Prize in Physics has been awarded for applications of the optical tweezers to biological systems. III: The 2018 Nobel Prize in Physics has been awarded for the method of generating high-intensity, ultra-short optical pulses using the optical tweezers.
What is not correct about the removal of the Deputy Chairman of the Rajya Sabha? I. The resolution can be initiated in any House of Parliament. II. The resolution can be moved after a prior notice of fourteen days. III. Signature of 1/4 members of the House is essential to introduce the resolution. IV. The resolution should be passed by the majority of the then members of the House. V. The resolution should be passed by the majority of the present and voting members of the House.
Under the Provisions of the Article 368(2) of the Constitution of India, if a bill comes to Rajasthan Legislative Assembly after passing by Parliament of India for resolution to rectify, then
1. Resolution can be passed by Assembly
2. Resolution can be rejected by Assembly
3. No Amendment shall be proposed to such a resolution.
Select the correct answer from given below:
An electron microscope gives higher magnifications than an optical microscope because:
A pearlitic steel is observed under an optical microscope which has a numerical aperture (N.A) of 1.5 and uses the radiation of 4500A. The minimum lamellar spacing (in A) which can be resolved using this microscope is
An electron microscope gives higher magnification than an optical microscope, because :